Figure 4–4 alphapc 164sx isa bus devices, 2 isa expansion slots, 3 isa i/o address map – Compaq 164SX User Manual
Page 48: Table 4–1 isa i/o address map (sheet 2 of 2), Isa expansion slots, Isa i/o address map, Alphapc 164sx isa bus devices, Isa bus devices, 2 isa expansion slots, 3 isa i/o address map
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Functional Description
ISA Bus Devices
Figure 4–4 AlphaPC 164SX ISA Bus Devices
4.3.2 ISA Expansion Slots
Two ISA expansion slots are provided for plug-in ISA peripherals (J22 and J23).
4.3.3 ISA I/O Address Map
Table 4–1 lists the AlphaPC 164SX ISA I/O space address mapping.
Table 4–1 ISA I/O Address Map
(Sheet 1 of 2)
Range (hex)
Usage
000-00F
8237 DMA #1
020-021
8259 PIC #1
040-043
8253 timer
060-061
Ubus IRQ12 and NMI control
sd[7:0]
PCI-to-ISA
Bridge
CY82C693U-NC
la[23:17]
PCI
sd[15:0]
Combination
Controller
37C669
Diskette
Parallel
COM1/2
ISA0
ISA1
sa[19:0]
sa[15:0]
Transceivers
EIDE – Primary
EIDE – Secondary
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