| Appendix |
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Appendix A
A-1 MEMORY MAP
Address Range | Size | Description |
512K | Conventional memory | |
127K | Extended Conventional memory | |
1K | Extended BIOS data area if PS/2 mouse is | |
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| installed |
160K | Available for Hi DOS memory | |
96K | Available for Hi DOS memory and adapter | |
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| ROMs |
60K | Available for UMB | |
4K | Video service routine for Monochrome & | |
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| CGA adaptor |
32K | BIOS CMOS setup utility | |
20K | BIOS runtime service routine (2) | |
4K | Plug and Play ESCD data area | |
8K | BIOS runtime service routine (1) |
A-2 I/O MAP
DMA controller.(Master) | |
INTERRUPT CONTROLLER.(Master) | |
CHIPSET control registers. I/O ports. | |
TIMER control registers. | |
KEYBOARD interface controller.(8042) | |
RTC ports & CMOS I/O ports. | |
DMA register. | |
INTERRUPT controller.(Slave) | |
DMA controller.(Slave) | |
MATH COPROCESSOR. | |
HARD DISK controller. | |
PARALLEL port 2. | |
GRAPHICS adapter controller. |