1-1-3 : CMOS Read / Write Failure
1-1-4 : ROM BIOS Checksum
1-2-1 : Programmable Interval Timer
1-2-2 : DMA Initialization
1-2-3 : DMA Page Register
1-2-4 : SRAM Test
1-3-1 : DRAM Refresh
1-3-3 : 1St 64K RAM chip or data line
1-3-4 : First 64K Even / Odd logic
1-4-1 : Address Line Failure
1-4-2 : Parity Failure
2-1-1 : Bit 0 first 64K RAM
2-1-2 : Bit 1 first 64K RAM
2-1-3 : Bit 2 first 64K RAM
2-1-4 : Bit 3 first 64K RAM
2-1-5 : Bit 4 first 64K RAM
2-1-6 : Bit 5 first 64K RAM
2-1-7 : Bit 6 first 64K RAM
2-1-8 : Bit 7 first 64K RAM