| Table |
|
|
IRQ Line | Used/Available |
|
|
IRQ10 | Available for use by expansion card |
IRQ11 | Available for use by expansion card |
IRQ12 | Generated by keyboard controller to indicate that mouse’s output |
| buffer is full |
IRQ13 | Generated by math coprocessor to indicate coprocessor error |
IRQ14 | Available for use by expansion card |
IRQ15 | Available for use by expansion card |
|
|
DMA Channel Assignments
| Table |
|
|
DREQ Line | Used/Available |
|
|
DREQ0 | Available |
DREQ1 | Available |
DREQ2 | Generated by super I/O controller to initiate DMA cycle for |
| attached diskette drive |
DREQ3 | Available |
DREQ4 | Generated by bus controller chip to activate second DMA |
| controller |
DREQ5 | Available |
DREQ6 | Available |
DREQ7 | Available |
|
|
System Overview