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. 1000SE.DOC Rev. 1 05/19/94 MQC/nmm.
Page 2
Address range Space (Kilobytes) Used For:
'00000' - '9FFFF'
640
System working memory
'A0000' - 'B7FFF'
96
(Not Used)
'B8000' - 'BFFFF'
32
Video RAM (CGA)
'C0000' - 'CFFFF'
64
Space for I/Os on I/O expansion slot
'D0000' - 'DFFFF'
64
EMS window
'E0000' - 'EFFFF'
64
DOS ROM
'F0000' - 'F7FFF'
32
Back-Up RAM
'F8000' - 'FFFFF'
32
System (BIOS) ROM
Interrupts
Level Assigned To:______________________
NMI
I/O channel error; Time out power off;
System power off request; FDD ready___
0
Timer
1
Keyboard
2
(Not
used)
3
Secondary Communications (COM2)
4
Primary Communications (COM1)
5
Reserved for HDD
6
FDD
7
Parallel
Printer
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' / '0F7'
System Controller Ports
'208' / '2BF'
Expanded Memory
'2C0' / '2DF'
Real Time Clock
'2E8' / '2EF'
Expanded Memory
'2F8' / '2FF'
Secondary Communications (COM2)
'378' / '37F'
Parallel Printer
'3D0' / '3DF'
Display (LCD)
'3F0' / '3F7'
Floppy Disk
'3F8' / '3FF'
Primary communications (COM1)
