Retrocomputing

GZ/80-A03 - Zilog Z80 turbo card for Apple II computers

Submitted by GG on Thu, 01/30/2020 - 09:57

A new version of this project is available here

gz80The Microsoft Softcard was the first card to allow CP/M software to run on the Apple II. It was originally developed to simplify the porting of Microsoft Basic to the Apple II. It turned out to be a great success and at some point in time it was the most popular CP/M platform in use.
This success prompted the development of many compatible cards. Some exact copies, some enhanced or cost reduced. The GZ/80 is a modern implementation of a Softcard compatible card with an additional turbo mode with approximately double the speed of the original card.

Filed under
Retrocomputing
Apple

GGLABS Terminal V0.12f

Submitted by GG on Tue, 12/17/2019 - 18:27

A new version of GTERM is available here

GTERMGTERM is a newly developed VT100 terminal emulator for the Commodore 64. GTERM supports the GLINK232/swiftlink and the GLINK232T/Turbo232 UART cartridges. It features a custom monochrome software 80 columns display and supports serial speeds up to 115200 bauds on a stock c64.

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Retrocomputing
C64

A2SCSI-A01 - Apple II SCSI card clone

Submitted by GG on Sat, 10/19/2019 - 17:50

A new version of this project is available here

A2SCSI FrontThe Apple II SCSI card from 1986 was one of the first interface cards to attach a Hard Disk Drive to the Apple II line of computers. A2SCSI is a clone of the last revision (rev.C) of the card with a few enhancements to improve compatibility with modern SCSI drives.

Filed under
Retrocomputing
Apple

GGLABS Memory Test V0.44

Submitted by GG on Sun, 09/15/2019 - 00:39

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.

Filed under
Retrocomputing
Apple
C64

GZ/80-A02 - Zilog Z80 turbo card for Apple II computers

Submitted by GG on Sun, 06/16/2019 - 22:47

A new version of this project is available here

gz80The Microsoft Softcard was the first card to allow CP/M software to run on the Apple II. It was originally developed to simplify the porting of Microsoft Basic to the Apple II. It turned out to be a great success and at some point in time it was the most popular CP/M platform in use.

Filed under
Retrocomputing
Apple

UNICART - Universal Commodore 64/128 Cartridge

Submitted by GG on Tue, 06/04/2019 - 20:01

ramgsAfter we developed the UNICART/D many customers asked for a more compact version of the cartridge without the pass-through connector. The board uses one standard PLCC32 flash ROM up to 4Mbit. In C64 mode 8K, 16K and 16K Ultimax cartridge modes are supported. In C128 mode both 16K and 32K cartridges are supported.

Filed under
Retrocomputing
C64

A2SCSI-A00 - Apple II SCSI card clone

Submitted by GG on Wed, 05/22/2019 - 22:12

A new version of this project is available here

A2SCSI FrontThe Apple II SCSI card from 1986 was one of the first interface cards to attach a Hard Disk Drive to the Apple II line of computers. A2SCSI is a clone of the last revision (rev.C) of the card with a few enhancements to improve compatibility with modern SCSI drives.

Filed under
Retrocomputing
Apple
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