MACSIMM-A00 - Programmable ROM SIMM for Mac SE/30, IIfx and IIsi
Submitted by GG on Thu, 03/17/2016 - 00:30A new version of this project is available here
Filed under:
Apple
RAMGS/8 - SIMM based 8MB memory expansion for the Apple IIgs
Submitted by GG on Sun, 02/28/2016 - 17:11A new version of this project is available here
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GTERM25-A00 - DB25 Active SCSI Terminator with diagnostics LEDs
Submitted by GG on Sat, 02/20/2016 - 11:02A new version of this project is available here
Active termination is required to get newer higher performance drives working on vintage computers. Unfortunately both the Amiga and older Apple computers use a DB25 SCSI connector which makes finding a suitable terminator quite difficult. GTERM25 solves this problem providing a high performance active terminator with a DB25 connector and SCSI diagnostic LEDs.
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GS2HD - Apple IIgs RGB to HDTV Component Adapter
Submitted by GG on Tue, 11/24/2015 - 15:25
The apple IIgs, like many computers from the 80's and early 90's, has a analog RGB output at a 15KHz horizontal frequency (same as NTSC/PAL). The majority of modern monitors and TVs will not sync to anything below 31.5KHz on their VGA input. If you have a TV with a SCART connector it is possible to wire the RGB directly to the TV. Most TVs in USA, however, use the YPbPr component instead of SCART making a direct connection not possible.
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GS2HD-B00 - Apple IIgs RGB to HDTV Component Adapter
Submitted by GG on Tue, 11/24/2015 - 14:15A new version of this project is available here
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GS2HD-A00 - Apple IIgs RGB to HDTV Component Adapter
Submitted by GG on Mon, 06/22/2015 - 22:08A new version of this project is available here
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RAMGS-A02 - 4MB memory expansion for the Apple IIgs
Submitted by GG on Tue, 01/20/2015 - 00:38A new version of this project is available here
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RAMGS-MAX-A00 - 8MB memory expansion for the Apple IIgs
Submitted by GG on Fri, 11/07/2014 - 01:12A new version of this project is available here
The big brother of our previously released expansion card. The RAMGS-MAX will expand the memory of the apple IIgs to the maximum allowed of 8MB.
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RAMGS-A01 - 4MB memory expansion for the Apple IIgs
Submitted by GG on Sun, 08/03/2014 - 22:37
The apple IIgs is the most advanced computer in the Apple II series. Equipped with a 65c816 8/16-bit CPU with 24-bit address space it could address up to 16MB of memory. The original rom 01 model shipped with 256KB of fast RAM, the revised rom 3 shipped with 1MB (both had an additional 128KB of standard RAM and 64KB of sound RAM). RAMGS is a newly designed 4MB expansion card for this great classic computer.
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