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-
- I have now updated the packet driver code for Western Digital Ethernet
- cards to handle the micro channel version WD8003ET/A.
-
- Also, if you have a WD8003EBT which has 32 kbyte, all of that memory is
- used - not just 8 kbyte (and the WD8003ET/A will use all its 16 kbyte).
- The extra memory is used for the receive buffer chain, and if you have
- HEAVY broadcast traffic you loose fewer Ethernet frames and can avoid a
- noticable slow down in such cases. If you have light broadcast traffic
- there is no change in speed.
-
- I changed the interrupt level argument default from 2 to 3 so it is the
- same as the default setting of delivered hardware.
-
- The receive code is also somewhat simplified, e g counter interrupt is
- not enabled and corresponding code removed (it didn't do anything useful).
-
- There is now also a test if the memory range actually is available for the
- WD8003E to use. Previously, if it was occupied the PC froze and had to be
- rebooted.
- (*** NOTE! *** It turned out that many PC XTs and the like couldn't load )
- (the ver 3.2e driver beacuse the available memory test said memory was )
- (occupied, when it actually wasn't. The only change in ver 3.2f is revised)
- (code for available memory test. It now works also on XTs. )
-
-
- TAIL.ASM needed changes to allow interrupt levels above 7 not just for
- AT machines, but also for PS/2 with micro channel bus. Not to confuse,
- I made related changes also in HEAD.ASM.
-
- There were no errorlevels defined and you could not test if a driver load
- was successfull or not. In version 3.2e are now used some of the following
- errorlevels:
-
- ;
- ; _____________________ 0 = normal
- ; 1 = unsuitable memory address given; corrected
- ; In most cases every- 2 = unsuitable IRQ level given; corrected
- ; thing should work as 3 = unsuitable DMA channel given; corrected
- ; expected for lev 1-5 4 = unsuitable IO addr given; corrected (only 1 card)
- ; _____________________ 5 = packet driver for this int # already loaded
- ; External errors, when 6 = general cable failure (but pkt driver is loaded)
- ; corrected normal 7 = network cable is open -"-
- ; operation starts 8 = network cable is shorted -"-
- ; _____________________ 9 =
- ; Packet driver not 10 = usage message
- ; loaded. A new load 11 = arguments out of range
- ; attempt must be done 12 = unspecified device initialization error
- ; 13 =
- ; 14 = suggested memory already occupied
- ; 15 = suggested IRQ already occupied
- ; 16 = suggested DMA channel already occupied
- ; 17 = could not find the network card at this IO address
-
-
- This code is tested with all three card types (WD8003E, WD8003EBT and
- WD8003ET/A) in PS/2-50 and PS/2-70 as well as different AT machines,
- but only a few XT or the like is yet tested. (Version 3.2f should work
- also for XTs.)
-
- This version of packet driver does not include the fix for Novel remote reset
- ROM boot mentioned in the Wesleyan University report on Novell ROM booting.
-
-
- Jan Engvald, Lund University Computing Center
- ________________________________________________________________________
- Address: Box 783 E-mail: xjeldc@ldc.lu.se
- S-220 07 LUND Earn/Bitnet: xjeldc@seldc52
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- Telefax: +46 46 138225 OU=ldc; S=Engvald; G=Jan)
-
-