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. 6600.DOC Rev. 3 09/24/96 MQC/nmm
Page
11
of 5
T6600C, T6600C/CD, T6600C/CDV
(continued)
System Memory Map
Space
Address range
(Kilobytes)
Used For:
'00000000'
640
Conventional memory
0009FFFF'
000A0000'
128
Video RAM
000BFFFF'
000C0000'
32
VGA BIOS ROM
000C7FFF'
(Shadow RAM)
000C8000'
32
Reserved or SCSI BIOS ROM
64
(Shadow RAM)
'000EFFFF'
64
'000F0000'
64
System BIOS ROM
'000FFFFF'
(Shadow RAM)
'00100000'
7,168
System working
'007FFFFF'
memory
'00800000'
16,384
'017FFFFF'
'01800000'
256
The rest of system
'0183FFFF'
working memory
'01840000'
Memory expansion in
'0FFFEFFF'
expansion slot
'FFFF0000'
64
System BIOS ROM
'FFFFFFFF'
(Duplicated)
Interrupts
Interrup
t
Level
Assigned To:
--
NMI
RAM Parity Error; I/O Channel Error
0
Timer
1
Keyboard
2
PIC 2 for levels 8 to 15
1
3
*SIO from exp. bus pin-B25
4
*SIO from exp. bus pin-B24
5
From exp. bus pin-B24
6
FDC, from exp. bus pin-B22
7
PRT, *Sound system from exp. bus pin-B21
8
RTC
9
*Sound system, *SCSI from exp. bus pin-B04
2
10
*Sound system, *SCSI from exp. bus pin-D03
11
*Sound system, *SCSI from exp. bus pin-D04
12
*Sound system, *SCSI from exp. bus pin-D05
13
Math coprocessor
14
HDC, from exp. bus pin-D07
15
From exp. bus bin-D06
*: These assignments are controlled by special registers.
Special assignments on systems with preinstalled software
Sound System IRQ = 9 (set in Control Panel, Drivers, Windows)
MediaShare Mambo card IRQs (set in C:\Windows\AVK.INI)
Audio = 10
Video = 10
SCSI = 10
Ethernet = 5 (when used)
Toshiba built-in SCSI = 11 (set in C:\DOS\TSETUP.EXE)
PCMCIA IRQ = 15 (when used, set in enabler software)
