
Appendix B Technical Summary
I/O & MEMORY MAP
Memory Map :
| MEMORY MAP | ASSIGNMENT | 
| System memory used by DOS and | |
| 
 | application | 
| Display buffer memory for VGA/ EGA / | |
| 
 | CGA / MONOCHROME adapter | 
| Reserved for I/O device BIOS ROM or | |
| 
 | RAM buffer. | 
| Reserved for PCI device ROM | |
| System BIOS ROM | |
| System extension memory | 
I/O Map :
| I/O MAP | ASSIGNMENT | 
| DMA controller (Master) | |
| Interrupt controller (Master) | |
| Chipset controller registers I/O ports. | |
| Timer control regsiters. | |
| Keyboard interface controller (8042) | |
| RTC ports & CMOS I/O ports | |
| DMA register | |
| Interrupt controller (Slave) | |
| DMA controller (Slave) | |
| Math coprocessor | |
| Hard Disk controller | |
| Parallel  | |
| Graphics adapter controller | |
| Serial  | |
| Net work ports | |
| Parallel  | |
| Monochrome & Printer adapter | |
| EGA adapter | |
| CGA adapter | |
| Floppy disk controller | |
| Serial  | 
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