PET 2001 6550 Video RAM Replacement

Name: PET 2001 6550 Video RAM Replacement
SKU: 36638
Price: 40.00 USD
Availability: InStock

This is to replace the two 6550 video RAM chips in early Commodore PET 2001 boards

Designed by Tynemouth Software in United Kingdom

2024-11-20T18:54:14.949Z-6550 Video RAM Replacement angled.jpg

2024-11-20T18:54:14.949Z-6550 Video RAM Replacement.jpg

2024-11-20T18:54:14.949Z-6550 Video RAM Replacement pins.jpg

2024-11-20T18:54:14.949Z-6550 Video RAM Replacement pins angled.jpg

2024-11-20T18:54:14.949Z-6550 Video RAM Replacement installed angled.jpg

2024-11-20T18:54:14.949Z-6550 Video RAM Replacement installed.jpg

2024-11-20T18:54:14.949Z-Padboard showing spacing.jpg

2024-11-20T18:54:14.949Z-PET ROM RAM, PET Video RAM, PET Charater ROM.jpg

2024-11-20T18:54:14.949Z-PET Diagnostics and 6550 Video RAM Replacement 2.JPG

2024-11-20T18:54:14.949Z-PET Video RAM, PET Charater ROM.jpg

2024-11-20T18:54:14.949Z-PET 2001 with PET Diagnostics.jpg

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This is to replace the two 6550 video RAM chips in early Commodore PET 2001 boards

What is it? This is a board which replaces the two 6550 video RAM chips in some PET 2001 boards. Why did you make it? The 6550 RAM chips are a common point of failure in early PETs, so this will rep…

What is it?

This is a board which replaces the two 6550 video RAM chips in some PET 2001 boards.

Why did you make it?

The 6550 RAM chips are a common point of failure in early PETs, so this will replace them with a modern static RAM chip.

You can spot these as a pair of MPS 6550 chips in the unusual size of 22 pin 400mil spacing, near the back of the PET board. This cannot be used to replace 6550 RAM in as system RAM or anywhere else, just the video RAM. If you need to replace the main system RAM, use a PET ROM/RAM board - see elsewhere in my store for that.

Some late model 2001 PETs have 2114 video, this will not replace that, but I have a board for that as well.

This listing include the 6550 replacement board only (the red V4.0 boards). It does not include the PET 2001 board, 6550 RAM chips or any of the other things shown such as the Charter ROM replacement, PET ROM/RAM, PET Video, PET Dual Joystick with Piezo and SD2PET (all of which are available separately)

This will also allow PET Diagnostics to run on a 2001, as that is not compatible with the 6550 video RAM timings.

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Tynemouth Software Shipping Policy:

Tracked shipping is recommended on international orders. Parcel will include full value declaration and may be liable to additional delays or customs fees upon arrival. Please be aware of this before ordering, there is nothing I can do about it.