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)
