Force 21264 Alpha PCI/ISA SBC User Information page 49

Physical Description
The signals can be defined into a number of groups :-
Bus Master IDE
Primary/Secondary IDE DMA Requests, Acknowledges and Interrupt Request : P/SIDE_DREQ,
P/SIDE_DACK_L, P/SIDE_IRQ
IDE I/O Read and Write : IDE_IOW_L, IDE_IOR_L
PCI/IDE Reset, 16-bit Select and Chip-select Block : PCIRST_L, IDE_IOCS16_L, BLKIDE
ISA Control
Cypress ISA transceiver enable and direction control : CY_XDEN_L, CY_XDIR
Flash ROM Chip-select : ROM_CS_L
Keyboard/Mouse Control
Keyboard/Mouse Data and Clock : KBDATA, MSDATA, KBCLK, MSCLK
Reset Control
Watchdog Reset, Debounced Push Button Reset : WATCH_RST_L, PUSH_RST_L
Manufacturing Diagnostic
SROM controlled TTL level signals : DIAG_SOUT, DIAG_SIN
I/O Card Interrupts
Interrupts from the Server Management function : IO_SMI_L, IO_NMI_L
CPU Server Management
CPU fan and temperature signals : CPU_FAN_OK_L, CPU_TEMP_OK_L
Other
TTL level speaker, Vcc/Battery-back-up supply, Keylock : SPEAKER, NV_VCC, KEYLOCK
FORCE 21264 Alpha PCI/ISA SBC User Information for the EBM65 3–9