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Internal BlueSCSI for Apple IIgs and //e

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README.md

BlueGS: Internal BlueSCSI for Apple IIgs and Enhanced //e

https://github.com/xunker/blue-gs

BlueGS: Internal BlueSCSI for Apple IIgs and Enhanced //e
About
How it works
Features
Compatible SCSI cards
Performance
Board
Assembly
- Bill-of-Materials
  - Compatible Termination ICs
- Assembly Steps
Installation
Usage
Schematics
EDA/Kicad Files
Version Changes
Credits
License

About

BlueGS is the internal hard drive your Apple IIgs and //e always craved.

Using the BlueSCSI SCSI drive emulator and your compatible SCSI card, you have a fully internal hard drive with accessible microSD slot while still keeping your DB-25 connector free for other peripherals.

How it works

BlueGS connects between your SCSI card and its external DB-25 connector to give you a seamless installation. The BlueGS module itself mounts in a free DB-25 connector cutout in the rear of your IIgs or Enhanced //e.

Features

Gives your Apple IIgs or //e an internal, cable-free hard drive
Can be powered from SCSI termination power only (if present)
"Termination Power" mod is not required (when powered from the IIgs internal fan connector)
Can provide termination power to the SCSI bus (when powered from the IIgs internal fan connector)
Built-in termination that is controlled with a single switch
TI/Unitrode termination ICs instead of passive termination, reduces power consumption by over 2/3rds
Connection for external drive activity LED

Compatible SCSI cards

Tested:

GGLabs A2SCSI - a clone of the Apple Rev C SCSI card

Untested, but expected to be compatible:

Apple Rev C SCSI and clones
Apple High-Speed SCSI ("Sandwich II")

Unknown, but likely compatible:

Ramfast SCSI
Any SCSI card that uses has the same IDC-26/DB-25 pinout as the Apple Rev C SCSI

If you have an SCSI card with an IDC-26/DB-25 connector that has not been tested and would be willing to test your card with BlueGS, please contact us to arrange to have a test unit sent to you.