Delta Tau Universal PMAC Lite, Hardware Reference Manual

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Universal PMAC Lite
Host PC-AT I/O Address Map 43
HOST PC-AT I/O ADDRESS MAP
Hex Range Dec Range Usage
000-01F 0-31 DMA Controller 1 8237A-5
020-03F 32-63 Interrupt Controller 1 8259A
040-05F 64-67 Timer 8254-2
060-06F 96-111 8042 (Keyboard)
070-07F 112-127 Real-time clock, NMI mask
080-09F 128-159 DMA Page Registers
0A0-0BF 160-191 Interrupt Controller 2 8259A
0C0-0DF 192-223 DMA Controller 2 8237A-5
0F0-0FF 240-255 Math CO processor
1F0-1F8 496-504 Fixed Disk
200-20F 512-527 Game Control
210-217 528-535 Expansion Unit (usually open)
278-27F 632-639 Parallel Printer: LPT2
2B0-2DF 688-735 Alternate EGA
2F8-2FF 760-767 Asynchronous Common: COM2
300-31F 768-799 Prototype Card (usually open)
360-36F 864-879 PC Network
378-37F 888-895 Parallel Printer: LPT1
380-38F 896-911 SDLC Communications 2
390-393 912-915 Cluster
3A0-3A9 928-937 SDLC Communications 1
3B0-3BF 944-959 IBM Monochrome Display/Printer
3C0-3CF 960-975 Enhanced Graphics Adapter
3D0-3DF 976-991 Color/Graphics
3F0-3F7 1000-1015 Diskette Controller
3F8-3FF 1016-1023 Asynchronous Common: COM1
x2E1 GPIB Adapter
x390-x393 Cluster Adapter
* Note : It is highly recommended that the addresses marked below with * not be used by PMAC
PC. See above chart for possible contention with existing I/O. If a contention occurs, try a new
unused address.
Contention is exhibited by:
1)
Total Malfunction.
2) Partial Function, Input O.K., Output bad or vice versa.
3) Intermittent operation.