Apple

GTERM25-A00 - DB25 Active SCSI Terminator with diagnostics LEDs

Submitted by GG on Sat, 02/20/2016 - 11:02

A new version of this project is available here

GTERMActive 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.

Filed under: 
Retrocomputing
Apple
Amiga

GS2HD - Apple IIgs RGB to HDTV Component Adapter

Submitted by GG on Tue, 11/24/2015 - 15:25

GS2HD D00The 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.

Filed under: 
Retrocomputing
Apple

RAMGS-A01 - 4MB memory expansion for the Apple IIgs

Submitted by GG on Sun, 08/03/2014 - 22:37

ramgsThe 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.

Filed under: 
Retrocomputing
Apple

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