Diagnostic ROM

This is a replacement 16K ROM image to install on an Oric/Atmos mainboard to perform step-by-step test CPU/ULA/DRAM/VIA/PSG and associated circuitry. Includes schematic for optional external ROM/status LEDs/ULA replacement clock source and source code.

Download

The source, documentation, and other files can be downloaded below.

Diagnostics ROM

• Diagnostic ROM image Ver 1.08j (ZIP 4KB)
• Diagnostic ROM .ASM source Ver 1.08j (ZIP 23KB)
• Documentation Ver 1.08 (PDF 883KB)
• External ROM board Rev 1 (GIF 164KB)