Onyx ONYX-1721 - A.1 I;O Address Map; A.2 Memory Address Map

Slim Medical Panel PC ONYX-1721/1921
Appendix A I/O Information A-2
A.1 I/O Address Map
Address Description
User
Address
000-01F DMA Controller #1 000-000F
020-03F Interrupt Controller #1, Master 020-021
040-05F System Time 040-043
060-06F 8042 (Keyboard Controller) 060-064
070-07F
Real time Clock, NMI (non-maskable
Interrupt) Mask
070-073
080-09F DMA Page Register 080-08F
0A0-0BF Interrupt Controller #2 0A0-0A1
0C0-0DF DMA Controller #2 0C0-0DF
0F0-0FF Math Coprpcessor 0F0-0FF
170-177 Secondary IDE Channel 170-177
1F0-1F7 Primary IDE Channel 1F0-1F7
2F8-2FF Serial Port 2 2F8-2FF
378-37F Parallel Printer Port 1 378-37F
3B0-3DF EGA / VGA card 3B0-3DF
3F8-3FF Serial Port 1 3F8-3FF
A.2 Memory Address Map
Memory Address Description
00000-9FFFF System memory
A0000-BFFFF VGA buffer
C0000-CFFFF VGA BIOS
E0000-FFFFF System BIOS