Shared Projects by gruffdba

Shared Projects by gruffdba

Sharp MZ700 Character ROM switcher

2 layer board of 0.91 x 1.58 inches (23.0 x 40.2 mm)
Uploaded: November 29, 2025
Shared: December 13, 2025
Total Price: $7.15

Basically, just a 27C64 to 27C32 adapter.
J1 allows the top or bottom 4K bank to be exposed to the computer. For R1 I used 1K resistor. For my Sharp MZ700 this allows me to switch between Japanese and European character sets.

Basically, just a 27C64 to 27C32 adapter.
J1 allows the top or bottom 4K bank to be exposed to the computer. For R1 I used 1K resistor. For my Sharp MZ700 this allows me to switch between Japanese and European character sets.

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Camputers Lynx Joystick Interface

2 layer board of 4.01 x 2.11 inches (101.7 x 53.5 mm)
Uploaded: January 09, 2021
Shared: January 09, 2021
Total Price: $42.15

The Camputers Lynx was a Z80 based microcomputer from the early 1980s. This is a recreation of the joystick interface created using a schematic provided by Pete Todd.

The Camputers Lynx was a Z80 based microcomputer from the early 1980s. This is a recreation of the joystick interface created using a schematic provided by Pete Todd.

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Camputers Lynx DOS Interface

2 layer board of 4.01 x 2.11 inches (101.7 x 53.5 mm)
Uploaded: December 31, 2020
Shared: December 31, 2020
Total Price: $42.15

The Lynx was a British Z80 micro from the early 1980s.

This is a recreation of the Lynx DOS Interface which is needed to add disk drives to the Lynx. The Lynx DOS connects to the Lynx FDC via a 26-pin ribbon cable.

The board uses a 2764 PROM which must contain the LynxDOS ROM. To start …

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The Lynx was a British Z80 micro from the early 1980s.

This is a recreation of the Lynx DOS Interface which is needed to add disk drives to the Lynx. The Lynx DOS connects to the Lynx FDC via a 26-pin ribbon cable.

The board uses a 2764 PROM which must contain the LynxDOS ROM. To start …

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Camputers Lynx FDC

2 layer board of 6.29 x 2.99 inches (159.8 x 76.0 mm)
Uploaded: November 28, 2020
Shared: December 15, 2020
Total Price: $94.05

The Lynx was a British Z80 micro from the early 1980s.

This is a recreation of the Floppy Disk Controller. To use this you will need the Lynx DOS interface, and connect this controller to the interface using a 26-pin ribbon connector that connects to SKT1.

SKT2 is a standard 34-pin Shug…

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The Lynx was a British Z80 micro from the early 1980s.

This is a recreation of the Floppy Disk Controller. To use this you will need the Lynx DOS interface, and connect this controller to the interface using a 26-pin ribbon connector that connects to SKT1.

SKT2 is a standard 34-pin Shug…

Show full description

Embeddable link to order this shared Project