System Address Ranges - Addi-Data PA 1508 Technical Description

System address ranges

SYSTEM ADDRESS RANGES
Address
000..01F
020..03F
040..05F
060..06F
070..07F
080..09F
0A0..0BF
0C0..0DF
0F0..0FF
0100..01EF
01F0..01F7
01F8..01FF
0200..020F
0210..021F
0220..025F
0260..0277
0278..027F
0280..02E7
02E8..02EF
Function
1st DMA controller
1st interrupt controller
Timer 82C54
Keyboard controller
Real time clock & NMI
Mask
DMA-Page
Register
2nd interrupt controller
2nd DMA controller
Coprocessor
Free
Hard disk controller
Free
Game port
Extension unit
Reserved
Free
LPT2
Reserved
COM4
Address
02F0..02F7
02F8..02FF
0300...031F
0320...032F
0330...035F
0360...036F
0370...0377
0378...037F
0380...038F
0390...039F
03A0...03AF
03B0...03BF
03C0...03CF
03D0...03DF
03E0...03E7
03E8...03EF
03F0...03F7
03F8...03FF
0400...0FFFF
This indications refer to AT/386/486
Systems
PA 1508
Function
Reserved
COM2
Prototyp board
(generally free)
Hard disk controller
(only PC)
Free
Network boards
2nd floppy disk drive
controller
LPT1
SDLC / BSC
Free
SDLC / BSC
Monochrom graphic
board
EGA graphic board
CGA graphic board
Free
COM3
Diskette drive controller
COM1
Free bzw. Redundant
addressing
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