Toshiba t1200 Specification Guide

Toshiba America Information Systems Inc. ("TAIS") shall not be liable for damages of any kind for use of this information, which is subject to
change without notice. Copyright 1994 TAIS. 1200.DOC Rev. 1 05/20/94 MQC/nmm.

Page 2

256K

40000

System working

320K

50000

640

memory

384K

60000

448K

70000

512K

80000

576K 90000 __________________________
640K

A0000

704K    B0000 96     (Not Used)________
736K    B8000 16     Video RAM________
752K    BC000 32     (Not Used)________
768K

C0000

832K

D0000

192

Space for I/Os on I/O

896K    E0000       expansion slot______
960K    F0000   2     Back-Up RAM______
962K    F0800   30     (Not Used)_________
992K    F8000   32     System (BIOS) ROM

I/O Port Assignment

Port Address

From / To Device / Function____________________________

'000' / '01F'

82C37 : DMAC Device

'020' / '03F'

82C59 : PIC Device

'040' / '05F'

82C53 : PIT Device

'060' / '07F'

Programmable I/O Ports

'080' / '09F'

DMA Page Register

'0A0' / '0BF'

NMI Mask Register

'0E0' / '0FF'

Special Register

'1F0' / '1FF'

Hard Disk

'208' / '20F'

Expanded Memory Unit I/O - 1

'218' / '21F'

Expanded Memory Unit I/O - 2

'258' / '25F'

Expanded Memory Unit I/O - 3

'268' / '26F'

Expanded Memory Unit I/O - 4

'2A8' / '2AF'

Expanded Memory Unit I/O - 5

'2B8' / '2BF'

Expanded Memory Unit I/O - 6

'2C0' / '2DF'

Real Time Clock

'2E8' / '2EF'

Expanded Memory Unit I/O - 7

'2F8' / '2FF'

Secondary Communications (COM2)

'378' / '37F'

Parallel Printer

'3D0' / '3DF'

Display

'3F0' / '3F7'

FDC

'3F8' / '3FF'

Primary communications (COM1)