F Test DMA BIOS checksum test. Controller 0 Keyboard detect and initialization. Test DMA Controller 1 Test DMA Controller 1. Test DMA Page Registers Test DMA Page Registers. 8259 Channel 1 masked interrupts by alternately turning off and on the interrupt lines.
Interrupt Bits Turn off interrupts then verify no interrupt mask register is on.
18 Test 8259 Interrupt Functionality Force an interrupt and verify the interrupt occurred. 19 Test Stuck NMI Verify NMI can be cleared. 1A Display CPU clock. If EISA non-volatile memory checksum is good, execute EISA initialization. If not, execute ISA tests an clear EISA mode flag.