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Path: bloom-beacon.mit.edu!hookup!swrinde!menudo.uh.edu!lobster!antimatr!faq-rt From: faq-rt@antimatr.hou.tx.us (Mark Whetzel) Newsgroups: comp.sys.ibm.pc.rt,comp.unix.aix,comp.answers,news.answers Subject: COMP.SYS.IBM.PC.RT: - AIX V2 - Part 1 of 4 - Frequently Asked Questions Summary: This posting contains part 1 of 4 Frequently Asked Questions (and their answers) and general information, hints and tips for using AIX V2.2.x on IBM RT (615x) computers. Keywords: IBM RT PC software FAQ 6150 6151 6152 AIX VRM AOS MACH PICK Message-ID: <ibmrt_aixv2p1_762606210@antimatr.hou.tx.us> Date: 2 Mar 94 11:03:37 GMT Expires: 15 Apr 94 11:03:30 GMT Sender: markw@antimatr.hou.tx.us Reply-To: aix-rt@antimatr.hou.tx.us Followup-To: comp.sys.ibm.pc.rt Lines: 692 Approved: news-answers-request@MIT.Edu Supersedes: <ibmrt_aixv2p1_762525136@antimatr.hou.tx.us> Xref: bloom-beacon.mit.edu comp.sys.ibm.pc.rt:1427 comp.unix.aix:21319 comp.answers:3990 news.answers:15927 Archive-name: ibm-rt-faq/aix-v2/part1 Last-modified: Tue Mar 1 06:22:50 CST 1994 Version: 1.0 Frequently Asked Questions for: AIX V2.2.1 on IBM RT systems Part 1 of 4 parts. Hardware specific additions for AIX/RT. Posted around the first of each month to comp.sys.ibm.pc.rt, and to comp.unix.aix. This is the second of three FAQ's dedicated to the IBM RT processor. The other FAQs cover different aspects of the RT processor, either hardware issues common to all operating systems, or when used with different operating systems. RT hardware topics have the archive name.... ibm-rt-faq/hardware RT AOS topics have the archive name......... ibm-rt-faq/aos This FAQ is dedicated to use of the AIX Version 2 operating system, running on the IBM RISC processor known as the RT. The RT is known also as an IBM model 6150 or 6151 machine. The following informational items are correct to the best of my knowldge. Additions, corrections or suggestions are gladly accepted. I want this list to be a dynamic article, with input by our readership. All of the information in this list is specific for the IBM AIX V2.2.1. As I no longer have access to any RT's that run AIX V2.1.2 (or any earlier version). Unless you have a machine with less than 4 MB ram, you can run AIX V2.2.1. I highly suggest that you upgrade if possible. Problems with complilers, commands and libraries have only been fixed by IBM in the latest versions of AIX. Portibility and system extensions added via maintence by IBM to the V2.2.1 level of AIX make it a rather capable UNIX Operating System. Especially with a little dose of PD software. Other versions of AIX exist for other platforms, such as the IBM PS/2 and other Intel 386 compatibles (running AIX V1.3.x), or the Risc System/6000 (running AIX V3.2.5 is the latest), or IBM large mainframe systems, (running AIX/ESA). Those versions are usually discussed in the newsgroup comp.unix.aix. All versions of AIX are discussed in that forum, including AIX for the RT, but as the volume of postings and the FAQ for the comp.unix.aix newsgroup tend to be more RS/6000 and AIX V3 specific, RT questions tend to get lost in the shuffle. Over time, RT speific questions both hardware and software, for all the differnet OS that the RT supports, have migrated to being discussed in the newsgroup comp.sys.ibm.pc.rt. There are other companion lists I also post covering different aspects of RT usage. One of the major lists is questions dealing with the hardware aspects of the box, common to all supported operating systems. Also included in the hardware FAQ is a little history and backround on the IBM RT, its orgins, and some notes on its folklore. Specific FAQ lists are available for each of the other operating systems supported on the RT platform. Due to limited information and demand, the only other OS specific list currently being posted is on the Academic Operating System - called AOS, a BSD 4.3 port. This list is organized as a digest for newsreaders that can handle it. Each "digest page" generally covers one topic or Question/Answer . You can jump to a particular topic by searching for that index key (such as S.1) in position 1 of this list. Direct inclusions of information by some submitters is framed with a line of "==**==**" repeating across the page. In order to build up a better FAQ base, E-mail your contributions. I will respond back to you via mail on your submission. This FAQ is a work in progress. Some entries are incomplete, and other information may be missing. Places with ????? denote areas needing more work or information. Areas that I have made personal comments on are enclosed in square brackets []. Input is always welcomed for making this a better list. Style, grammar and spelling notes are also welcome. Sometimes it seems that my brain operates faster than my fingers can type. :-) For AIX RT submissions E-mail to: aix-rt@antimatr.hou.tx.us For AOS RT submissions E-mail to: aos-rt@antimatr.hou.tx.us For MACH RT submissions E-mail to: mach-rt@antimatr.hou.tx.us For general Q&A submissions (hardware and other stuff) E-mail to: faq-rt@antimatr.hou.tx.us Other comments and correctons should be sent to the author: Mark Whetzel DOMAIN addr: markw@antimatr.hou.tx.us BANG address: ..!uhnix1!lobster!antimatr!markw Daytime work number 8AM-5PM M-F CST VOICE: (713) 963-2544 ___--___---___--___---___--___---___--___---___--___---___--___---___--___ Changes for this Feburary posting: 1) Initial posting. LOTS of incomplete entries. Initial large size forced it to be organized into 4 parts. ___--___---___--___---___--___---___--___---___--___---___--___---___--___ ------------------------------ Index to the AIX RT FAQ family of postings. Note: The entire hardware index is entered here. The answers in the hardware FAQ for these topics give the common non OS specifc answers. Topics with an astrisk have been given more specific information in this FAQ on that area as related to the AIX V2 operating system usage. Sections 2, 3 and 4 are unique to this FAQ and cover only AIX topics. 1.0 General Hardware questions with AIX V2 specific extensions. * H.1 What is an IBM RT and some of its history? H.2 What types of processors were made? H.3 How fast are the different models of RT? H.4 Can you upgrade from one processor type to another? H.5 How can I tell what kind of processor type is installed? H.6 Where can I get parts for RT systems? * H.7 What adapter cards are supported in an RT running AIX V2. * H.8 What IBM perhiperials were available? H.9 What cables are available? H.10 What is the pinout of the 6150 serial ports? How do I make my own RS232 cables compatible for use with AIX. H.11 What is the pinout of the 6150/6151 Mouse/Tablet port? H.12 What is the pinout of the 6150/6151 keyboard port? H.13 Can I use a Non-RT keyboard on an RT? * H.14 How do I get a parallel printer attached to an RT? H.15 What are the switches on the Megapel adpater for? Technicial information on Megapel adapter and display. * H.16 AT Co-Processor information. * H.17 How can I get the maximum data on a 6157 tape drive? (Also covers different types of tapes to use. flags for 'backup' and 'tar'.) * H.18 What hard disks can be used in an RT running AIX V2? What value is the ESDI terminator resistor for an E70 drive? Switch settings and meanings for E70, E114 and E310 drives. H.19 What is the difference between an R70 and an E70 disk drive? H.20 What are the characteristics of the various IBM RT disk drives? * H.21 What SCSI devices can be attached? * H.22 What do the LED codes mean during power on. * H.23 What does LED code xx mean (during AIX runtime)? H.24 What is different about the RT I/O slots. What cards will run in slot 8. * H.25 How do I run diagnostics. * H.26 Serial port cards maximums and limitations. H.27 What are the switches on the 3278/79 adpater? H.28 Jumper location and information on AT Fixed disk adapter. H.29 Jumper locations and information on ESDI adapter. H.30 Jumper locations and information on EESDI adapter. H.31 Jumper locations and information on the 'PORTED' EESDI adapter. H.32 IBM 9332 Disk drive information. H.33 Pin connections and technical information on 6153, 6154 and 6155 monitors. H.34 IBM 5081 Display technical information. H.35 Jumpers and info on the Ungermann-Bass IBM ethernet card. H.36 IBM RT Token-Ring card jumpers and addressing. 2.0 Software questions S.1 What is AIX? S.2 What is VRM? S.3 The RT will not boot from floppy, but does boot from the internal hard disks. Also VRM unique keyboard sequences. S.4 What operating systems are available for the RT? S.5 Where can I get a copy of AIX for the RT? S.6 Where are the 'man' pages? S.7 Contents of the AIX V2.2.1 distribution diskettes. S.8 Maintence? What updates are available for AIX? S.9 How to install updates to AIX. S.10 Can I install updates from other than floppies? S.11 Brief overview of the AIX/RT install process. S.12 Compiler usage questions? S.13 How to managage serial ports. S.14 How to add user accounts to AIX V2. Also covers the various /etc/security stanza file contents. S.15 6157 1/4" tape drive special file names. S.16 UUCP setup and management. S.17 Setting up networking on an RT running AIX V2. S.18 How to set up SLIP - TCP/IP over serial lines. S.19 Configuring NFS on AIX V2. - Different versions of NFS for AIX V2. - Known unfixed problems with NFS 1.2 on AIX V2. S.20 Known outstanding problems with AIX V2, unfixed by IBM. S.21 What Non-IBM software WAS available. S.22 Setting up and using the PC Simulator. S.23 Features of the AIX bourne shell. S.24 Floppy disk drive special file names. S.25 Minidisk usage notes. S.26 How to add more pagespace and virtual memory. Pagespace notes and a program to display usage. S.27 ADDU setup and notes. S.28 How to set up print queues on AIX V2. How to increase the number of printers over eight. S.29 Accessing remote printers via TCP/IP. Sharing your printers with other systems (lpd daemon). S.30 Using 9332 (SCSI) disk drives with AIX. S.31 Making a backup of the VRM minidisk. 3.0 Problem Question and Answers. Q.1 I have lost my root password, how can I reset it? Q.2 LED code 99 is displayed at power on, what is it? Q.3 How do I move 'system' filesystems (/,/usr,/tmp,/u,/vrm)? How to increase the size of filesystems. Q.4 What do the IODN numbers mean. Q.5 How do I make a netnews filesystem with lots of inodes? Q.6 The domain name server is not working correctly. Q.7 Mail addressing and setup. Q.8 How do I set up a dial-in autospeed detect serial line? Q.9 How to setup a serial port for shared dial-in and out? Q.10 The devices command won't find my newly installed adapter. Q.11 What is the procedure to add a hard disk to a system that has been in use on another RT system running AIX. Q.12 The disk I have is one of the IBM supported disks, but it can't be found by diagnostics, or AIX. Q.13 What is the procedure for adding a Non-IBM ESDI or MFM hard disk with AIX V2. Q.14 What is the procedure for using non-IBM SCSI disks with AIX V2. Q.15 The diagnostics start booting ok, then fail with a LED code. What do the codes mean? Q.16 How do I setup and use the AT Simulator. Q.17 What books comprise a full set of AIX/RT documentation? Q.18 How to change the 4 Mb filesize limit in AIX/RT. Q.19 How to install a system image from tape. Q.20 How to control the sound of the keyboard. Q.21 How to find out the machine (processor) serial number. Q.22 How to change which adapter will be the console device? Q.23 How to find out which floating point unit is in use. Q.24 HFT virtual terminal tips and tricks. Q.25 How to determine how much real memory AIX has available. Q.26 How to get reverse video on the 6153 display. Q.27 /tmp is too small. Q.28 How to change the cursor type/shape. Q.29 How to copy diskettes with a single diskette drive. Q.30 How to copy a set of DOS files to a AIX filesystem. Q.31 How to run IBM AIX/RT AIXwindows V2.1 and other X11 notes. Q.32 How to recreate a lost+found directory. Q.33 Minidisk tricks and traps. 4.0 Software porting questions P.1 Are there any archive sites for RT software? P.2 General "How to I port product <foo>" to AIX V2 ? P.3 BIND 4.8.3 (domain name server, and DNS resolver) P.4 GDBM (Gnu DBM replacement) P.5 IDA Sendmail 5.65c+IDA-1.4.4.1 P.6 ELM 2.3 PL11 or 2.4 PL21 P.7 X11 R4 or R5. P.8 GCC P.9 inn 1.4 P.10 xv-2.1 P.11 Kermit P.12 Gopher 2.011 P.13 GNU fileutil-3.9 P.14 others? 9.0 Credits, Acknowledgements and other information. X.1 Acknowledgements and copyright information. ------------------------------ H.1 - What is an IBM RT? More about this RT's history and information may be found in the RT hardware FAQ. under this section heading. A partial summary of that entry is included here. The IBM RT is a RISC based processor designed by IBM, and unique to that platform. The RT was first announced by IBM in January 1986. The processor is generally refered to as 032 processor. In some documentation it is also refered to as the 'ROMP' processor. The RT PC Advanced System Processor has a 32-bit Reduced Instruction Set Computer (RISC) architecture developed by IBM and implemented in a 1-micron CMOS technology. It has sixteen 32-bit general purpose registers and uses 32-bit addresses and data paths. The microprocessor is controlled by 118 simple 2- and 4-byte instructions. An IBM-developed advanced memory management chip provides virtual memory address translation functions and memory control. It provides a 40-bit virtual address structure capable of addressing one terabyte of virtual memory. Internal processor organization enables the CPU to execute most register-to-register instructions in a single cycle. The model 115/125 RT PC with their FAST ECC memory, is capable of providing the processor with a 32-bit word of data plus ECC each 100 nsec cycle. This memory consists of 40 1-megabit IBM RAM chips. These chips are the same megabit technology used in the IBM 3090. For more history, see the Hardware FAQ posted to comp.sys.ibm.pc.rt. ------------------------------ H.7 - What adapter cards are supported in an RT running AIX V2. The IBM RT has what is called in the industry a ISA bus. Based on the original IBM PC AT bus in design, the RT has 8 I/O slots in the tower (6150 model), and 6 slots in the desktop (6151 model). Slot 3 and 6 on the tower model and slot 1 on the desktop models are eight bit style slots. Slot 8 on the tower and slot 5 on the desktop model are wired slightly different than standard. See the hardware FAQ for more information. All adapters listed in this section on the hardware FAQ are supported by AIX V2. Technically, any adapter that conforms to ISA standards would work provided there are appropiate device drivers AND no conflicts with existing adapters registers and bus addresses. The RT diagnostics program disks are unfortunately rather particular about OEM cards that attempt to emulate IBM adapters. This can sometimes lead to problems running diagnostics, where the AIX/RT system will otherwise run fine under regular operation. Unknown adapter cards usually will be ignored. ------------------------------ H.8 - What IBM perhiperials were available? All peripherial devices listed in this section on the hardware FAQ are supported by AIX V2. ------------------------------ H.14 How do I get a parallel printer attached to an RT? There are three different ways to attach a centronics parallel printer to the RT. The AIX printer driver only supports a maximum of two parallel printer interfaces. The megapel and Mono/Print adapters do not have a way of changing the I/O address that they answer to, and cannot be used together without disabling the printer adapter on the megapel card. To have a second printer is supported by using a AT serial/Parallel card, jumpered at the secondary printer port address. If no Mono/Print or megapel adapter is present, then a second Serial/Parallel card can be used. 1) AT Serial/Parallel interface card. Parallel port primary address = 3BC Parallel port secondary address = 278 2) PC/XT Monochrome/Parallel printer card. Parallel port only address = 3BC No jumper available to disable this port. 3) Megapel card has a parallel interface on it. Parallel port only address = 3BC Swich 1 position 2 enables/disables the port. Shipped disabled from factory. WARNING: Some combinations of interface cards can cause I/O channel conflicts. Both Serial/Parallel interface cards CAN be present with either a Mono/Print or Megapel adapter, IF the parallel port on one of the S/P adapters is not defined with the devices command. Readers of this newsgroup have reported success with clone parallel printer cards operating correctly. I suspect that the diagnostics diskettes MAY have problems with them however. ------------------------------ H.16 - AT Co-Processor information. The IBM PC AT Math Coprocessor, Feature code #4756, provides for execution of many IBM PC and IBM PC AT programs concurrent with and under control of the RT main processor. With appropriate program support (the RT PC AT Coprocessor Services licensed program, (5669-057) (Feature #5030), the option enables the RT to emulate the IBM PC AT Models 068 and 099. Application execution is concurrent with RT program execution. Note: The megapel display adapter is not usable as a console or for application output for the PC AT coprocessor. ------------------------------ H.17 - How can I get the maximum data on a 6157 tape drive? ==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**== Submitter: crow@austin.ibm.com (David L. Crow) IBM Advanced Workstations Division Date: 30 Apr 92 14:12:59 GMT >We have the 6157-002 model (150Meg, I think) and for some >reason, it needs three tapes to backup only 240Meg of data. DC 600A tapes should hold 118 MB of data. Of course this is somewhat dependent on the RT systems ability to keep the data moving to the tape as it is streaming. If there is a break in data bacause the backup command can't get it there quick enough, then you'll lose some of your capacity. Here is an item from ASKQ two or three years ago that describes what flags to use to make sure that you get the maximum capacity out of your 6157. This probably could go into the FAQ (except the FAQ is pretty much just for AIX Version 3). ============================================ Subject: 6157 TAPE INFORMATION FOR AIX BACKUP COMMAND The correct descriptions for the -s and -d flags of the AIX backup command are: -slength Specifies the length of the usable space on a tape medium. This is a combination of the physical length and the number of tracks on the tape. The default "length" is 2700. To get the value for "length", you should multiply the physical length of the tape by the number of tracks (see table below). -ddensity Specifies the amount of data a system can write to a tape medium in bytes per inch. The default "density" is 700 bytes per inch. The density written to the tape is hardware controlled and can not be changed. The 6157-001 writes at 10,000 ftpi (flux transactions per inch) which is approximately equivalent to a density rating of 8,000 bits per inch. The 6157-002 writes at 12,500 ftpi which is equivalent to a density rating of 10,000 bits per inch. The -d (density) parameter is used with 0.5 inch tape drives to specify the density, such as 800, 1600, or 6250 bpi, but doesn't affect the density, that is, bits per inch, of the 6157. The -d parameter is used for the 6157 in the calculation of what quantity of data will be put on the tape. To increase the amount of data on the tape, the value for -d should be 1000 for 6157-001 or 1200 for 6157-002. Reference: AIX/RT Commands Reference Volume 1, SC23-2011-1, page 91. AIX PS/2 Commands Reference, SC23-2025, page 35. CALCULATION OF TAPE CAPACITY: The following formula yields the approximate capacity of a tape: # tracks * length * 11 inches * density = capacity (in bytes). 9 * 300 * 11 * 1000 = 29,700,000 bytes or about 29 MB 18 * 600 * 11 * 1200 = 142,560,000 bytes or about 142 MB The "11 inches" is the length of the recording foot, the actual amount of data stored on the tape per foot, and the interblock gaps take up approximately 1 inch per foot. TABLE: For the following AIX command(s), the values for -s and -d are in the table below: find ./ -print | backup -iv -C2000 -f/dev/rmt0 -sXXXX -dYYYY Recommendations for 6157-001: TAPE CARTRIDGE LENGTH TRACKS -s -d CAPACITY 3M DC 300A 300 feet 9 2700 1000 29 MB 3M DC 300XLP 450 feet 9 4050 1000 44 MB 3M DC 600A 600 feet 9 5400 1000 59 MB Recommendations for 6157-002: TAPE CARTRIDGE LENGTH TRACKS -s -d CAPACITY 3M DC 600A 600 feet 15 9000 1200 118 MB 3M DC 600XTD 600 feet 18 10800 1200 142 MB ==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**== ------------------------------ H.18 - What hard disks can be used in an RT with AIX V2? At this time the hardware FAQ lists all known drives supported by IBM with an RT running AIX. To use a NON-IBM ESDI drive on an RT, it will have to be very close in its geometry to one of the IBM supported drives. I have not yet tried to use ESDI drives with larger than 310 Mbytes of space with AIX. For larger SCSI drives, see section H.21. See the topics on AIX usage of ESDI disks covered in more detail in sections Q.11 thru Q.13. ------------------------------ H.21 - What SCSI devices can be attached? The regular IBM suported SCSI adapter is slightly different from most workstation adapters. IBM chose to implement their adapter with the 'Differential Driver/Receiver option' and with the 'Alternative 2 connector' as per the proposed ANSI standard SCSI-1. The SCSI interface conforms to (then) proposed ANSI standard X3T9.2/82-2 Revsion 17B. Two wires are used for each signal lead in a push-pull signaling method also called 'differential-ended'. What this boils down to is that the IBM SCSI card is electriclly incompatible with a lot of the off-the-shelf SCSI drives. Most drives for other workstations and PC's use a 'single-ended' SCSI implementation. Now that SUN and IBM have announced differential interface adapters for thier workstations, we may see more disk drives available with native differential interfaces. IBM officially supported only one device attached to the SCSI interface card, the IBM 9332 'Athens' disk drive. Due to a design problem in the minidisk driver code for the IBM SCSI adapter, SCSI disks over 1 Gig will not work. Worse, the address for the sector will wrap back to zero, completely destroying the minidisk partition table, and the first filesystem on the drive. See question topic Q.14 for information on adding NON-IBM SCSI disks to an AIX system. ------------------------------ H.22 - What do the LED codes mean during power on. The initial IPL sequence of LED codes are listed in the hardware FAQ. After LED code 22 and 26 is displayed control is passed to the loadable VRM boot code. As VRM is booting, these LED codes are displayed by Loadable Power On Self Test routines (LPOST). LPOST LED values during IPL 30 Monochrome display adpater. 31 Color graphics adapter (EGA). 32 6153 display adapter. 33 6154 display adapter. 34 6155 display adapter. 35 Fixed disk in location C. 36 Advanced processor card. 39 Diskette in location A. 40 Diskette in location B. 43 PC AT Coprocessor option. 44 Floating-Point accelerator. 45 Monochrome display/Printer adapter. 46 3278/79 emulation adapter. 47 Memory card in slot C bad - 4Meg enhanced card. 48 Memory card in slot D bad - 4Meg enhanced card. 49 RS-232C 8-port adapter. 50 PC Network adapter. 51 Serial device - serial/parallel adapter. 52 SCSI adapter. 53 RS-232C 4-port adapter 1 54 Parallel device - serial/parallel adapter. 55 RS-232C 4-port adapter 2. 56 RS-422A 4-port adapter 1. 57 RS-422A 4-port adapter 2. 58 5080 attachment adapter. 59 S/370 attachment adapter. 5U Memory expansion option or Enhanced Advanced processor and Memory Mgmt. card. 60 Multiprotocol communications adapter. 61 5080 peripheral adapter. 62 Baseband adapter. 63 Lighted PF keys. 64 Dials. 65 5081 display adapter 1. 66 5081 display adapter 2. 67 Advanced floating-point accelerator. 68 Floating-poing processor on Advanced Processor and Memory Mgmt. card. 69 Memory option on Advanced processor and Memory Mgmt. card. 71 Memory card in slot C bad - 2 Mb card. 72 Memory card in slot C bad - 1 Mb card. 73 Memory card in slot C bad - 4 Mb card. 74 Memory card in slot C bad - 8 Mb enhanced card. 76 Memory card in slot D bad - 1 Mb card. 77 Memory card in slot D bad - 2 Mb card. 78 Memory card in slot D bad - 4 Mb card. 79 Memory card in slot D bad - 8 Mb enhanced card. 80 Mouse device. 81 keyboard device. 82 Speaker device. 84 Bus memory cards. 85 Tablet device. 86 Token ring network adapter. 87 RS-422A 8-port adapter. 88 Reserved (Power on). 90 Streaming tape adapter. 93 Diskette read/write error. 94 Final LPOST found no display - Fatal. 95 Fixed-disk write error. 9c MIL-STD 188 8-port adapter. cc 6156 portable disk drive model 3. cu 6156 portable disk drive model 1. uc 6192 expander card. uu 6192 receiver card. ------------------------------ H.23 - What does LED code xx mean (during AIX runtime)? All the LED codes are summarized in a little pamplet from IBM manual number SC23-2022 "RT PC VRM/Hardware Quick Reference". The maroon colored binder "IBM RT PC Problem Determination Guide" contains two manuals: "IBM RT PC Problem Determination Guide" number SA23-2604 "IBM RT AIX Operating System Problem Determination Guide" number SA23-2603 Procedures a given for a variety of LED codes, what to check, and how to take system dumps, reading the error logs and more. Recovery procedures are also given for some error codes. VRM LED Values during runtime. c0 VRM dump complete c4 VRM dump abend. c5 The diskette is damaged, insert another in drive A. c6 VRM dump waiting for diskette to be inserted. the 'c6' will alternate on the LEDs with the VRM abend code. After the diskette has been inserted, a keyboard sequence is used to start the dump. c7 The dump diskette is full, insert next dump diskette. c8 The system is checking the diskette for damage. c9 VRM dump writing to diskette. VRM Abend [Abnormal End] codes (alternate with the 'C6' code above) 01 A level-2 hardware interrupt has occured. 02 A machine check has occured. 03 The VRM received an SVC that was not issued by a virtual machine. 04 An unidentified program check occured. 05 A trap instruction was encountered. 06 A data protection exception has occured. 07 An unidentified IAR exception has occured. 08 An unidentified IAR exception has occured. 09 An IAR protection exception has occured. 10 A privileged operation exception has occured. 11 An illegal operatin exception has occured. 12 A page fault occured before VRM was fully operational. 13 A page fault occured that could not be processed by VRM. 14 A floating-point exception has occured. 15 The VRM encountered an unresolved reference. 16 The VRM has encountered a stack overflow. 17 All paging space is in use. 18 The VRM tried to reference an address that is not valid. 19 The VRM encountered a permanent I/O error in the paging area. 20 The VRM does not have enough real memory to continue. 21 The minidisk cannot be accessed. 22 The VRM cannot find the paging space minidisk. 23 The VRM has received an initialization data that is not valid. 24 The VRM is unable to allocate a system control block. 25 The VRM could not find a disk device driver. 26 An I/O channel error has occured. 27 An I/O error occured while accessing cylinder 0 of a fixed disk. 28 A processor I/O error has occured. 29 A floating-point DMA error has occured. Flashing LED values during VRM system initialization: 02 Read error - fatal. 03 Insuffient memory to load module - fatal. 04 Insuffient memory for the DDA - fatal. 05 Insuffient memory for the MIT - fatal. 06 Insuffient memory for the DTOC - fatal. 07 Insuffient memory for the match list - fatal. 08 Relocation symbol type not supported. 09 File type not supported. 10 Invalid device - fatal. 11 Invalid index for address from inode - fatal. 12 Inode out of range - fatal. 13 Address out of range - fatal. 14 File not found - fatal. 15 No freeblock header space - fatal. 16 Freeing freespace - fatal. 17 Address already allocated - fatal. 18 Not on a word boundry - fatal. 19 Invalid file name - fatal. 20 Inavlid IOCN in the file name. 21 Invalid IOCN in the DDS. 22 Invalid length field in the DDS. 23 Execution of loaded program failed. 24 No entry point was found. 25 Bad load module. 45 Base device missing at VRM install time. 46 Probable programming error (contact IBM). 47 Error in vtcp command. 48 Define code SVC failed for vtcp module. 49 Insufficient memory for segment to read code. 50 Define Device SVC failed for control program. 51 Attach device SVC failed for control program. 52 Define Device SVC failed for a new device. 53 Define Device SVC failed for the VTRM. 54 VTRM could not be installed. 99 Unexpected program or machine check - fatal. ------------------------------ H.26 - Serial port cards maximums and limitations. Under AIX/RT the maximum rate supported by the various serial cards is 19,200 baud. If you have one of the very old unbuffered 4-port cards, you may experience a great deal of overrun problems at high speeds, (>4800 baud) plus system loading during communication. *** FAQ Continued in part 2 *** ===================== end of ibm-rt-faq/aix-v2/part1 =========================== -- AIX..... NOT just another UNIX. (tm) Mark Whetzel | My own RT system.. My own thoughts.. DOMAIN: markw@antimatr.hou.tx.us | IBM RT/135 running AIX 2.2.1 UUCP ..!menudo!lobster!antimatr!markw | comp.sys.ibm.pc.rt FAQ maintainer.