Rom Bios Data Area - Tandy 1000 SL Technical Reference Manual

Software
ROM BIOS Data Area
The following table gives the starting offset, and length of each BIOS
device driver. This area is located at segment 40:OO.
Comm card address
Printer addresses
Devices installed
Not used
Memory size
I/O channel RAM size
KBD data area
Disk data area
Video data area
Not used
Clock data area
KBD Break
& Reset flags
Not used
Printer timeout counter
Comm timeout counter
KBD extra data area
0000
0008
0010
0012
0013
0015
0017
003E
0049
0067
006C
0071
0074
0078
007C
0080
8 (1 word per card)
8
(1
word per printer)
2 (16 bits)
1
2 (1
word)
2 (1
word)
39
1 1
30
5
5
3
4
4 (1 byte per printer)
4 (1 byte per card)
4
(2 words)
52.