Award original XT BIOS Post Codes
- 03 - Flag resister test
- 06 - CPU register test
- 09 - System hardware initialization
- 0C - BIOS checksum
- 0F - DMA page register initialization
- 12 - Test DMA address and count registers
- 15 - DMA initialization
- 18 - Timer test
- 1B - Timer initialization
- 1E - Start RAM initialization
- 21 - Test base 64K of RAM
- 24 - Setup init. and temp stack
- 27 - Initialize PIC
- 2A - Interrupt mask register test
- 2D - Hot interrupt test
- 30 - V40 DMA if present
- 33 - Verify system clock initialization
- 36 - Keyboard test
- 39 - Setup interrupt table
- 3C - Read system configuration switches
- 3F - Video test
- 42 - Serial port determination
- 45 - Parallel port determination
- 48 - Game port determination
- 4B - Copyright message display
- 4E - Calculation of CPU speed
- 54 - Test of system memory
- 55 - Floppy drive test
- 57 - System initialized before boot
- 5A - Call to Int 19