Acer BIOS POST Codes
- 04 - CPU verification; POST start
- 08 - Shutdown condition 0; Shutdown byte 0
- 0C - BIOS ROM checksum tested
- 10 - CMOS ROM shutdown byte tested
- 14 - DMA controller tested
- 18 - System timer initialized
- 1C - Memory refresh system tested
- 1E - Memory type determined
- 20 - Base 128K memory tested
- 24 - 8042 keyboard controller tested
- 28 - CPU descriptor instruction tested
- 2C - 8259 PIT tested
- 30 - Temporary Interrupts located and initialized
- 34 - BIOS Interrupt vectors and routines configured
- 38 - CMOS RAM tested
- 3C - Memory size determined
- 40 - Shutdown condition 1
- 44 - Video BIOS ROM initialized
- 45 - RAM initialized and tested
- 46 - Cache memory and controller initialized and tested
- 48 - Memory tested
- 4C - Shutdown condition 3
- 50 - Shutdown condition 2
- 54 - Shutdown condition 7
- 58 - Shutdown condition 6
- 5C - Keyboard and auxiliary I/O tested
- 60 - BIOS Interrupt routines setup
- 64 - RTC tested
- 68 - Floppy drive and controller tested
- 6C - Hard drive and controller tested
- 70 - Parallel port tested
- 74 - Serial port tested
- 78 - Time of day setup
- 7C - Optional ROM's searched for and started
- 80 - Math coprocessor tested
- 84 - Keyboard tested
- 88 - System initialized
- 8C - System initialized
- 90 - Operating system boot process started
- 94 - Shutdown condition 5
- 98 - Shutdown condition A
- 9C - Shutdown condition B