Commodore CBM PET 2001 - 8 Computer With 8050 Dual Floppy Drive
Item History & Price
| Reference Number: Avaluer:29850745 | Brand: Commodore |
| Vintage: Yes | Model: Commodore PET |
This PET 2001-8 is operational and in great cosmetic shape.
The system ROM and RAM have been bulletproofed with a Tynemouth Software PET ROM/RAM replacement board, which means there will be no further issues with onboard RAM (or ROM). The original 6550 RAM ICs from this unit had a number of failures and, in addition to their frailty, original (working) RAM ICs for this model are fairly scarce (and expensive), so this is one less problematic component to have to source in the event o...f failure. The video RAM was also replaced with a modern equivalent, as it was experiencing faults as well. The PCB and power supply appear to be in good shape aside from the few IC replacements that have taken place. Lastly, the ROM/RAM replacement board has also maxed out the RAM to 32K.
The screen has zero burn and is bright and crisp.
The chiclet keyboard has typical wear on a few keys, but is otherwise in good shape; all keys have been cleaned and tested for functionality. The foil PET badge on the front of the case is in excellent shape as well.
The integral datasette powers up and responds to commands, but needs its drive belt replaced. An external run-of-the-mill Commodore datasette, however, may be connected to the card-edge connector on the back as an alternative.
The floppy drive is clean and powers on, but only works intermittently. The error code presented by the front LEDs is code number five, which service documents indicate to involve one of two ICs: UH3 (a 6502 CPU) and/or UK3 (a 901869-01 RRIOT chip). As the drive has worked intermittently, I am hesitant to say that either are necessarily bad ICs; that having been said, the drive likely needs attention and/or repair and should be purchased with that understanding. Replacement pull and NOS RRIOTs can still be sourced and, barring that, a 6532 RIOT with accompanying 1K ROM can be used (with an adapter board) as a compatible replacement. An IEEE-488 cable with IEEE/card-edge adapter is included.
Also included are the accompanying manuals for the PET and the bundled cassette tape with BASIC examples and an assembly language monitor (on the tape's second side). As the tape is over 40 years old now and was not in the best of shape when I originally acquired it (the same shape it is in now), it is non-functional and included for the sake of completeness.
This is a heavy computer (39 lbs); the floppy drive is no exception (24 lbs). Local pickup in the Dallas/Fort Worth area is preferred, but shipping is available. If you are buyer that is not in the DFW area, but are in Texas or one of the surrounding states, please message me; we can most likely work out a meetup. In the event shipping is required, floppy disks will be inserted into the drives and their mechanisms locked down to assist in preventing damage during transport. Additionally, the computer and floppy drive will be shipped separately.
The system ROM and RAM have been bulletproofed with a Tynemouth Software PET ROM/RAM replacement board, which means there will be no further issues with onboard RAM (or ROM). The original 6550 RAM ICs from this unit had a number of failures and, in addition to their frailty, original (working) RAM ICs for this model are fairly scarce (and expensive), so this is one less problematic component to have to source in the event o...f failure. The video RAM was also replaced with a modern equivalent, as it was experiencing faults as well. The PCB and power supply appear to be in good shape aside from the few IC replacements that have taken place. Lastly, the ROM/RAM replacement board has also maxed out the RAM to 32K.
The screen has zero burn and is bright and crisp.
The chiclet keyboard has typical wear on a few keys, but is otherwise in good shape; all keys have been cleaned and tested for functionality. The foil PET badge on the front of the case is in excellent shape as well.
The integral datasette powers up and responds to commands, but needs its drive belt replaced. An external run-of-the-mill Commodore datasette, however, may be connected to the card-edge connector on the back as an alternative.
The floppy drive is clean and powers on, but only works intermittently. The error code presented by the front LEDs is code number five, which service documents indicate to involve one of two ICs: UH3 (a 6502 CPU) and/or UK3 (a 901869-01 RRIOT chip). As the drive has worked intermittently, I am hesitant to say that either are necessarily bad ICs; that having been said, the drive likely needs attention and/or repair and should be purchased with that understanding. Replacement pull and NOS RRIOTs can still be sourced and, barring that, a 6532 RIOT with accompanying 1K ROM can be used (with an adapter board) as a compatible replacement. An IEEE-488 cable with IEEE/card-edge adapter is included.
Also included are the accompanying manuals for the PET and the bundled cassette tape with BASIC examples and an assembly language monitor (on the tape's second side). As the tape is over 40 years old now and was not in the best of shape when I originally acquired it (the same shape it is in now), it is non-functional and included for the sake of completeness.
This is a heavy computer (39 lbs); the floppy drive is no exception (24 lbs). Local pickup in the Dallas/Fort Worth area is preferred, but shipping is available. If you are buyer that is not in the DFW area, but are in Texas or one of the surrounding states, please message me; we can most likely work out a meetup. In the event shipping is required, floppy disks will be inserted into the drives and their mechanisms locked down to assist in preventing damage during transport. Additionally, the computer and floppy drive will be shipped separately.
