Ampro Little Board 700 Reference Manual page 41

Chapter 3
Pin # Signal
19 GND
20 Key
21 IDRQ0
22 GND
23 IOW*
24 GND
25 IOR*
26 GND
27 IORDY
28 Reserved
29 IDACK0*
30 GND
31 IRQ14
32 NC
33 A1
34 SD33_66
35 A0
36 A2
37 CS0
38 CS1
39 Reserved
40 GND
Notes: The shaded area denotes power or ground. The signals marked with * = Negative true logic.
LittleBoard 700
Description
Digital Ground
Key pin plug
Primary Device DMA Channel Request
Digital Ground
Primary Device I/O Read/Write Strobe
Digital Ground
Primary Device I/O Read/Write Strobe
Digital Ground
Primary Device I/O-DMA Channel Ready
Reserved
Primary Device DMA Channel Acknowledge
Digital Ground
Interrupt Request 14
Not connected
IDE ATA Primary Disk Address (0 to 2). Used to indicate which byte in the
ATA command block or control block is being accessed
UDMA 33/66 Sense
IDE ATA Primary Disk Address (0 to 2). Used to indicate which byte in the
ATA command block or control block is being accessed
IDE ATA Primary Disk Address (0 to 2). Used to indicate which byte in the
ATA command block or control block is being accessed
Primary Slave/Master Chip Select
Primary Slave/Master Chip Select
Reserved
Digital Ground
Reference Manual
Hardware
35