DFI 586TXD User Manual page 70

I/O Address Map
I/O Address
0000-001F
0020-003F
0040-005F
0060-006F
0070-007F
0080-009F
00A0-00BF
00C0-00DF
00E8
00F0
00F1
00F8-00FF
01F0-01F8
0200-0207
0278-027F
02F8-02FF
0300-031F
0360-036F
0378-037F
0380-038F
03A0-03AF
03B0-03BF
03C0-03CF
03D0-03DF
03F0-03F7
03F8-03FF
Note:
The I/O address hex 0000 to 00FF are reserved for the system board
I/O. Hex 0100 to 03FF are available on the I/O channels.
70
Function
DMA Controller 1, 8237A-5
Interrupt Controller 1, 8259A, Master
Timer, 8254-2
8742 (Keyboard Controller)
Real-time Clock, NMI
(Non-maskable Interrupt) Mask
DMA Page Memory, 74LS612
Interrupt Controller 2, 8259A
DMA Controller 2, 8237A-5
Shadow RAM and Cache Control Bit
Clear Numeric Processor
Extension Busy
Reset Numeric Processor Extension
Numeric Processor Extension
Fixed Disk
Game I/O
Parallel Printer Port 2
Serial Port 2
Prototype Card
Reserved
Parallel Printer Port 1
SDLC, Bisynchronous 2
Bisynchronous 1
Monochrome Display and Printer Adapter
Reserved
Color/Graphics Monitor Adapter
Diskette Controller
Serial Port 1