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- Path: sparky!uunet!cs.utexas.edu!sdd.hp.com!zaphod.mps.ohio-state.edu!n8emr!uncle!jcnpc!kumiss!erd
- From: erd@kumiss.cmhnet.org (Ethan Dicks)
- Subject: Commodore PET - usage and software
- Newsgroups: comp.sys.cbm
- X-Newsreader: TIN [version 1.1 PL6]
- Message-ID: <erd.04o8@kumiss.cmhnet.org>
- Date: 14 Nov 92 00:03:14 EDT
- Organization: Not an Organization
- Lines: 71
-
- > In <11408@spark.ed.ac.uk>, roger@cogsci.ed.ac.uk (Roger Burroughes) writes:
- > A request for those who wish to wallow in nostalgia...
-
- The best place for "nostalgia" questions is alt.folklore.computers, if
- your site receives the alt hierarchy. Folklore questions are always
- welcome.
-
- > I have recently acquired a couple of old CBM machines (which
- >look like PETs, but don't have "PET" anywhere on the casing) - a model
- >3032 and a model 4016, plus a 2031 disk drive, Commodore cassette, and
- >Commodore 4022 printer. Unfortunately there are no manuals with them
- >at all :-(
-
- Most "PET"s didn't have the word "PET" on them. The 3032 is a
- European PET of which I know almost nothing about except to
- suggest that it has 32K of RAM. The 4016 is a 40 column PET with 16K
- of RAM. The 2031 disk drive is an IEEE-488 version of the 1540 (both
- have CBM DOS 2.5). I know nothing about the 4022 printer. The tape
- drive is completely compatible with all Commodore 8-bit machines,
- including the VIC-20 and C-64.
-
- > Could some kind soul let me know what commands I need to
- >use to save and retrieve files from disk and cassette? Are the
- >commands for saving and loading BASIC files the same as for m/code
- >Printer commands would be handy too...
-
- The same commands are used on the PET as the C-64 and VIC-20... i.e.
-
- LOAD"$",8
- SAVE"MYPROG",8
-
- The printer is probably device 4, the 2031 is probably device 8. The
- tape drive is either device 1 or 2, depending upon which of the two
- tape connectors is used (internal or external).
-
- If you have a "BASIC 4" machine (check the version at power-up time),
- there are additional commands to BASIC which will make the use of
- disks easier. The old commands still work.
-
- > I must admit that these machines are not exactly the sort I'm
- >used to :-) Any help would be appreciated. By the way, does anyone
- >know if it's possible to move memory chips from one machine to the
- >other?
-
- The newest PETs used the "universal PET board", characterized by
- 4116 DRAMs and a built-in piezo buzzer. The machines chirped when
- powered on. Your 4016 may or may not be one. I don't know about
- the 3032. PETs came with two kinds of RAMs... the oldest PETs
- came with BASIC 1.0 and either 4Kb or 8Kb of static RAM on the
- motherboard (5101 or 2101 chips) - they could be expanded to 32K
- or RAM, but only with an add-in board. The later PETs came with
- either 16Kb or 32Kb of DRAM (4116 chips) and BASIC 2.0 or BASIC 4.0.
- The cost differential for a 32Kb model over a 16Kb model was
- several hundred dollars more than the cost of 8 4116 chips. As a
- result, Commodore punched holes in the PCB where the upper 16Kb
- went; this prevented people from buying the cheap PETs and upgrading
- the memory themselves. I have heard that it is possible to repair
- the damage done by the hole punch, but I have never tried it.
-
- In short, while you probably can move the chips from one machine to
- the other, you may find that the chips themselves are soldered
- or that the board may not be able to take them. 4116 chips are only
- a couple of bucks each, IF YOU CAN FIND THEM.
-
- -ethan
-
- --
- Ethan Dicks N8TVD ! This message is brought to you by the breakfast cereal
- erd@kumiss.cmhnet.org ! of Pennsic Veterans everywhere: Beerios.
- ! "They don't stay crisp in beer, but who cares?"
-
-