Click Here to visit our Sponsor
The History of Computing The Magazine Have Fun there ! Buy books and goodies
  Mistake ? You have mr info ? Click here !Add Info     Search     Click here use the advanced search engine
Browse console museumBrowse pong museum









 

Ready prompt T-shirts!

see details
ZX Spectrum T-shirts!

see details
Atari joystick T-shirts!

see details
Arcade cherry T-shirts!

see details
Spiral program T-shirts!

see details
Battle Zone T-shirts!

see details
Vectrex ship T-shirts!

see details
Atari ST bombs T-shirts!

see details
Moon Lander T-shirts!

see details
Competition Pro Joystick T-shirts!

see details
C64 maze generator T-shirts!

see details
Elite spaceship t-shirt T-shirts!

see details
Pak Pak Monster T-shirts!

see details
BASIC code T-shirts!

see details
Pixel adventure T-shirts!

see details
Shooting gallery T-shirts!

see details
Breakout T-shirts!

see details
Vector ship T-shirts!

see details





C > COMMODORE  > PET 30xx   


Commodore
PET 30xx

The CBM 3xxx and 4xxx series were revisions of the original PET 2001.
The range was rebranded CBM (Commodore Business Machine), as PET was dropped.

The 3xxx series introduced the 3000 series ROM sets, BASIC v3, and a completely redesigned keyboard layout, which used a full typewriter keyboard instead of the "mickey mouse" keyboard of the PET, and dropped the on-board cassette unit.


 

This is the first computer I worked with. It was my first job, and this CBM 3016 were extended to 32Ko RAM like the CBM3032 model.
I did many interface boards for this model and many programs in 6502 assembler too.

          
Sunday 12th October 2014
Régis Schmidt (CNRS Meudon, France)

Well, at least you know the video circuits are working. Looks like the CPU isn't resetting right and isn't executing its code in ROM and fails to clear its video RAM. I had same problem with old Apple 2. It's probably just some corrosion build up on chip leads or sockets. Cleaning up the contacts with a soft pencil eraser and/or reseating the chips will be enough to restart your vintage computer.
Hope that helps.

          
Monday 8th May 2006
Yves McDonald (the North, Quebec, Canada)

When I switch my PET on the screen is full of rubbish. It used to work fine sometimes but not now. Can it be fixed?

          
Friday 6th February 2004
A Hodson (England)

 

NAME  PET 30xx
MANUFACTURER  Commodore
TYPE  Professional Computer
ORIGIN  U.S.A.
YEAR  1979
BUILT IN LANGUAGE  Commodore Basic
KEYBOARD  QWERTY full-stroke keyboard, and sometimes calculator type
CPU  6502
SPEED  1 mHz
RAM  8, 16 or 32 k
ROM  14 k
TEXT MODES  40 x 25
GRAPHIC MODES  None
COLORS  monochrom
SIZE / WEIGHT  Heavy !
I/O PORTS  IEEE 488, Tape (2)
POWER SUPPLY  Built-in PSU



Software for this system!

SPACE INVADERS
year unknown company unknown
 
 
 
game




Please buy a t-shirt to support us !
Ready prompt
ZX Spectrum
Arcade cherry
Spiral program
Atari joystick
Battle Zone
Vectrex ship
C64 maze generator
Moon Lander
Competition Pro Joystick
Atari ST bombs
Elite spaceship t-shirt
Commodore 64 prompt
Pak Pak Monster
Pixel Deer
BASIC code
Shooting gallery
3D Cubes
Pixel adventure
Breakout
Vector ship

Related Ebay auctions in real time - click to buy yours







 
Click here to go to the top of the page   
Contact us | members | about old-computers.com | donate old-systems | FAQ
OLD-COMPUTERS.COM is hosted by - NYI (New York Internet) -