TECHNICAL INFORMATION
__________________________________
I/O ADDRESS MAP
I/O Address Map on System Board
I/O address hex 000 to 0FF are reserved for the
system board I/O.
ADDRESS
(HEX)
DEVICE
000-01F
DMA Controller 1, 8237
020-03F
Interrupt Controller 1, 8259, Master
040-05F
Timer, 8254
060-06F
Keyboard Controller
070-07F
Real Time Clock, NMI
(non-maskable interrupt) mask
080-09F
DMA Page Register, 74LS612
0A0-0BF
Interrupt Controller 2, 8259
0C0-0DF
DMA Controller 2, 8237
0F0
Clear Math Coprocessor Busy
0F1
Reset Math Coprocessor
0F8-0FF
Math Coprocessor Port
Содержание HIPPO II 486
Страница 1: ...H I P P O I I 4 8 6...
Страница 13: ...GENERAL FEATURES __________________________________...
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Страница 40: ...CONFIGURING THE SYSTEM __________________________________ 6 5 Vdc...
Страница 42: ...CONFIGURING THE SYSTEM __________________________________ THIS PAGE IS INTENTIONALLY LEFT BLANK...
Страница 49: ...TECHNICAL INFORMATION __________________________________...
Страница 60: ...TECHNICAL INFORMATION __________________________________ B30 OSC O B31 GND Ground...
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Страница 71: ...SYSTEM BIOS __________________________________...
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Страница 93: ...SYSTEM BIOS __________________________________...
Страница 98: ...SYSTEM BIOS __________________________________...
Страница 101: ...SYSTEM BIOS __________________________________...
Страница 106: ...Appendix D System Board Layout _______________________________...
Страница 107: ...Appendix E Memory Expansion Card Layout _______________________________...