Tag: mda

2 matching upgrades

Showing 2 products.

Status Product What it does Compatibility Links

Status	Product	What it does	Compatibility	Links
Sold outChecked Jul 30, 2026	CGA2RGBv2by GGLABS rgbi mda cga analog rgb 15khz video dac gbs 8200 external adapter	Converts MDA, CGA, EGA, and Commodore 128 RGBI into 15 kHz analog RGB with selectable sync. The maker labels the current project revision released, but its assembled Tindie listing said the seller was taking a break on 2026-07-30. The maker publishes a schematic but not a complete fabrication package. This is not a scan converter: an ordinary VGA display needs a GBS-8200, GBS-8220, OSSC, or another compatible scaler. The board requires 5 V through Micro-USB or a suitable GBS power connection. Sources GGLABS CGA2RGBv2 project page GGLABS CGA2RGBv2 Tindie listing	Commodore 128 Exact model General PC hardware Bus/interface	GGLABS CGA2RGBv2 project page CGA2RGBv2 Tindie listing CGA2RGBv2 schematic
Build itChecked Jul 15, 2026	Graphics Gremlinby Eric Schlaepfer isa mda cga vga composite video open hardware diy	Provides MDA and CGA-compatible display modes with 31 kHz VGA output for modern monitors and capture devices. This is a self-assembly project. The maker advises checking for shorts between each power rail and ground before installation; the oscillator configuration also affects CGA composite color accuracy. Sources Graphics Gremlin project README	ISA expansion boards Bus/interface	Hardware and build files

Sold outChecked Jul 30, 2026

CGA2RGBv2by GGLABS

Converts MDA, CGA, EGA, and Commodore 128 RGBI into 15 kHz analog RGB with selectable sync.

The maker labels the current project revision released, but its assembled Tindie listing said the seller was taking a break on 2026-07-30. The maker publishes a schematic but not a complete fabrication package. This is not a scan converter: an ordinary VGA display needs a GBS-8200, GBS-8220, OSSC, or another compatible scaler. The board requires 5 V through Micro-USB or a suitable GBS power connection.

Sources

Commodore 128 Exact model
General PC hardware Bus/interface

GGLABS CGA2RGBv2 project page CGA2RGBv2 Tindie listing CGA2RGBv2 schematic

Build itChecked Jul 15, 2026

Graphics Gremlinby Eric Schlaepfer

Provides MDA and CGA-compatible display modes with 31 kHz VGA output for modern monitors and capture devices.

This is a self-assembly project. The maker advises checking for shorts between each power rail and ground before installation; the oscillator configuration also affects CGA composite color accuracy.

Sources

Graphics Gremlin project README

ISA expansion boards Bus/interface

Hardware and build files