| Appendix |
Appendix A:
|
| |
Address Range | Size | Description |
512K | Conventional memory | |
127K | Extended Conventional memory | |
1K | Extended BIOS data area if PS/2 mouse is installed | |
160K | Available for Hi DOS memory | |
96K | Available for Hi DOS memory and adapter ROMs | |
60K | Available for UMB | |
4K | Video service routine for Monochrome & 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. | |
SERIAL port 2. | |
NETWORK ports. | |
PARALLEL port 1. | |
MONOCHROME & PARALLEL port adapter. | |
EGA adapter. |
