C64

UNICART/D - Universal Commodore 64/128 Cartridge with Passthrough

ramgsThis cartridge was originally developed to speed up the manufacturing diagnostic of our GRAM and GLINK232 products. Having to load the diagnostic for every board is pretty tedious and time consuming. The UNICART/D allows to have a custom ROM for both C64 and C128 while allowing to still plug in an additional cartridge.

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GLINK232T - Turbo232 UART cartridge for Commodore 64/128

glink232Both the commodore 64 and the 128 have a software UART implementation that limits the useful speed to 2400 bauds. To work around this limitation Dr. Evil Labs and later CMD produced the SwiftLink232 and Turbo232 cartridges based on the 6551 ACIA chip. Both of these have been out of production for a very long time. GLINK232T is a modern replacement for the CMD Turbo232 allowing the commodore 64/128 to communicate at speeds up to 230400 bauds.

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GGLABS Memory Test V0.41

GMT welcome screenGMT (GGLABS Memory Test) is a new developed memory test for vintage computers optimized for speed and coverage. The code is based on the test algorithms described in "Testing Semiconductor Memories: Theory and Practice" by A.J. van de Goor. The program is mostly in C plus small sections in assembly. It is free software and released under the GPL v3 license.

GRAM/4D - 4MB geoRAM Compatible RAM Expansion for Commodore 64/128

geoRAMThe geoRAM is a 512KB memory expansion for the Commodore 64 and 128 designed by Berkeley Softworks for use with GEOS. While not as fast as the Commodore REU due to its lack of DMA capabilities, it still provides a significant performance boost. GRAM/4D is a 4MB geoRAM compatible cartridge based on a two 4Mx4 DRAM devices.

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GRAM/4D-D01 - 4MB geoRAM Compatible RAM Expansion for Commodore 64/128

A new version of this project is available here

geoRAMThe geoRAM is a 512KB memory expansion for the Commodore 64 and 128 designed by Berkeley Softworks for use with GEOS. While not as fast as the Commodore REU due to its lack of DMA capabilities, it still provides a significant performance boost. GRAM/4D is a 4MB geoRAM compatible cartridge based on a two 4Mx4 DRAM devices.

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GLINK-LT-B00 - User Port RS232 for Commodore 8-bit Computers

A new version of this project is available here

glinkltGLINK-LT is a modern clone of the Commodore VIC-1011A RS232 User Port adapter for Commodore 8-bit computers. The adapter is fully supported by the standard Commodore BASIC at up to 2400 baud. Jumpers allow the card to be configured as a UP9600 for 9600 baud operation in Novaterm and Striketerm. A reset button and a 5V header are also provided for added convenience.

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GLINK-LT - User Port RS232 for Commodore 8-bit Computers

glinkltGLINK-LT is a modern clone of the Commodore VIC-1011A RS232 User Port adapter for Commodore 8-bit computers. The adapter is fully supported by the standard Commodore BASIC at up to 2400 baud. Jumpers allow the card to be configured as a UP9600 for 9600 baud operation in Novaterm and Striketerm. A reset button and a 5V header are also provided for added convenience.

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GRAM/1D - 1MB geoRAM clone for Commodore 64/128

geoRAMThe geoRAM is a 512KB memory expansion for the Commodore 64 and 128 designed by Berkeley Softworks for use with GEOS. While not as fast as the Commodore REU due to its lack of DMA capabilities, it still provides a significant performance boost. GRAM/1D is a 1MB geoRAM compatible cartridge based on a two 1Mx4 DRAM devices.

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GRAM/1D-C00 - 1MB geoRAM clone for Commodore 64/128

A new version of this project is available here

geoRAMThe geoRAM is a 512KB memory expansion for the Commodore 64 and 128 designed by Berkeley Softworks for use with GEOS. While not as fast as the Commodore REU due to its lack of DMA capabilities, it still provides a significant performance boost. GRAM/1D is a 1MB geoRAM compatible cartridge based on a two 1Mx4 DRAM devices.

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