IBM 4840-563 User Manual

I/O Map
ADDRESS
(HEX)
SIZE (DEC) DESCRIPTION REFERENCE
0000-001F 32 bytes Intel 82801DB (ICH4), Master DMA Controller Intel 82801DB
(ICH4)
0020-003F 32 bytes Intel 82801DB (ICH4), Master Interrupt
Controller
Intel 82801DB
(ICH4)
0030-003F 16 bytes Intel 82801DB (ICH4), Interrupt Controller #1 Intel 82801DB
(ICH4)
0040-005F 32 bytes Intel 82801DB (ICH4), Counter/Timer 1 Intel 82801DB
(ICH4)
0060 1 byte SMC LPC47M192 Keyboard Data (on ISA data
bus)
SMC LPC47M192
0061, 63, 65,
67
1 byte each Intel 82801DB (ICH4), System Port B, NMI
controller
Intel 82801DB
(ICH4)
0064 1 byte SMC LPC47M192, 8042 Keyboard Controller,
Command and Status Byte (on ISA data bus)
SMC LPC47M192
0062, 64, 66,
68-6F
AVAILABLE Intel 82801DB
(ICH4)
0070, bit 7
write only
1 bit Intel 82801DB (ICH4), Enable/Disable NMI Intel 82801DB
(ICH4)
0070, bits 6:0 7 bits Intel 82801DB (ICH4), Real Time Clock (RTC)
Address
Intel 82801DB
(ICH4)
0071 1 byte Intel 82801DB (ICH4), RTC and CMOS Data Intel 82801DB
(ICH4)
0072-0077 6 bytes Intel 82801DB (ICH4), RTC and CMOS Intel 82801DB
(ICH4)
0078-007F 8 bytes AVAILABLE Intel 82801DB
(ICH4)
0080 1 byte POST Checkpoint Register N/A
0081-008F 15 bytes Intel 82801DB (ICH4), DMA Controller Intel 82801DB
(ICH4)
0090-0091 2 bytes AVAILABLE Intel 82801DB
(ICH4)
0092 1 byte Intel 82801DB (ICH4), System Control Register Intel 82801DB
(ICH4)
0093-009F 13 bytes Intel 82801DB (ICH4), DMA Controller Intel 82801DB
(ICH4)
00A0-00B1 18 bytes Intel 82801DB (ICH4), Slave Interrupt Controller Intel 82801DB
(ICH4)
00B2-00B3 2 bytes Intel 82801DB (ICH4), Power Management Intel 82801DB
(ICH4)
00B4-00BF 12 bytes Intel 82801DB (ICH4), Slave Interrupt Controller Intel 82801DB
(ICH4)
00C0-00DF 32 bytes Intel 82801DB (ICH4), Slave DMA Controller Intel 82801DB
(ICH4)
00E0-00EF 16 bytes Intel 82801DB (ICH4), Intel 82801DB
(ICH4)
00F0-00FF 16 bytes Intel 82845GV (MCH4), numeric data processor Intel 82845GV
(MCH4)
01F0-01F7 8 bytes IDE Channel 0 (decoded by Intel 82801DB
(ICH4))
Intel 82801DB
(ICH4)
0295-0296 6 bytes SMC LPC47M192 Index/Data
p
ort for LPC SMC LPC47M192
SurePOS 500 Model XX3 Technical Reference, v 1.3 Page 38 of
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IBM 4840-563 Specifications

General

Brand	IBM
Model	4840-563
Category	Cash Register
Language	English