Int 60

TI Professional PC - SYSTEM ROM DATA AREA POINTER (NOT A VECTOR!)

Desc: The low word of this vector contains the segment of the RAM data area to be used by the system ROM at F400h:A000h, and the high word contains the length of the data area (see #03263)


Format of TI Professional System ROM data area:

Offset  Size    Description     (Table 03263)
00h    BYTE    port 00h shadow
01h    BYTE    port 03h shadow
02h    BYTE    port 04h shadow
03h    WORD    system configuration word (see #03266)
05h    BYTE    25ms count
06h    WORD    offset of timing event 1 (0008h)
08h    WORD    (event 1) offset of timing event 2 (0010h)
0Ah    BYTE    (event 1) unused (FFh)
0Bh    BYTE    (event 1) active flag (bit 7 set if on)
0Ch    WORD    (event 1) count-down until end of event
0Eh    WORD    (event 1) event routine (in segment F400h) to call at timeout
10h    WORD    (event 2) offset of timing event 3 (0018h)
12h    BYTE    (event 2) unused (FFh)
13h    BYTE    (event 2) active flag (bit 7 set if on)
14h    WORD    (event 2) count-down until end of event
16h    WORD    (event 2) event routine (in segment F400h) to call at timeout
18h    WORD    (event 3) offset of timing event 3 (0020h)
1Ah    BYTE    (event 3) unused (FFh)
1Bh    BYTE    (event 3) active flag (bit 7 set if on)
1Ch    WORD    (event 3) count-down until end of event
1Eh    WORD    (event 3) event routine (in segment F400h) to call at timeout
20h    WORD    (event 4) 0000h - last event
22h    BYTE    (event 4) unused (FFh)
23h    BYTE    (event 4) active flag (bit 7 set if on)
24h    WORD    (event 4) count-down until end of event
26h    WORD    (event 4) event routine (in segment F400h) to call at timeout
28h    WORD    offset of start of text display within segment DE00h
2Ah    WORD    end of display
2Ch    WORD    current absolute cursor position
2Eh    WORD    start of current character row
30h    WORD    current cursor column
32h    WORD    cursor type and size (see #03264)
34h    WORD    start of protected status region on screen (0000h = none)
36h    BYTE    pop flag used by some ROM routines
00h pop registers before return
nonzero:
Do not pop
37h    BYTE    unused (FFh)
38h    BYTE    PAUSE flag
00h off
FFh on
39h    BYTE    temp:
Current attribute while moving characters on screen
3Ah    WORD    start of keyboard queue (next key at start+2 or 0042h if 0060h)
3Ch    WORD    end of keyboard queue (next key inserted at end+2 or 0042h)
3Eh    BYTE    number of characters in buffer
3Fh    BYTE    keyboard mode flags (see #03265)
40h    BYTE    Alt-digit-digit-digit accumulator
41h    BYTE    Alt-digit-digit-digit count of digits (mod 3)
42h 16 WORDs   keyboard buffer (circular queue)
62h  8 DWORDs  Drive Interface Table pointers for floppies A:-D:
+ four others
(0000h:0000h if pointer not in use)
82h    BYTE    disk-error retry count (incremented on each disk error)
83h  2 BYTEs   BIOS scratch space
85h  8 BYTEs   current cylinder number for drives 0-7
FFh = unknown
8Dh    BYTE    BIOS scratch space
8Eh    BYTE    hard error code for last disk access
00h operation successful
8Fh  8 BYTEs   save area for disk DSR parameters
97h  6 BYTEs   current drive status
9Dh    BYTE    retry error status
9Eh    BYTE    BIOS scratch space
9Fh  7 BYTEs   ???
A6h  2 WORDs   INT 47 save area for SS,SP
AAh  2 WORDs   INT 46 save area for SS,SP
AEh  2 WORDs   INT 43 save area for SS,SP
B2h  2 WORDs   save area for SS,SP to be restored by common intr. exit routine
B6h 24 WORDs   stack for INT 47
E6h 24 WORDs   stack for INT 46
116h 17 WORDs   stack for INT 43
13Ah  6 BYTEs   system date and time (hundredths, seconds, minutes, hours, and
WORD days since 01jan1980)

Note: Timing event 1 is the disk I/O timeout, event 2 is the floppy disk motor timeout, event 3 is the floppy disk motor spin-up time, and event 4 is used to turn off the speaker after a delay


Bitfields for TI Professional PC cursor size and type:

Bit(s)  Description     (Table 03264)
15     reserved (0)
14-13  cursor type.
00 nonblinking.
01 off.
10 slow blink.
11 fast blink
12-8   starting scan line (0-11)
7-5    reserved (0)
4-0    ending scan line (0-11)

See Also: #03263

Bitfields for TI Professional PC keyboard mode flags: Bit(s) Description (Table 03265) 7 CapsLock was ON at last keypress 6-4 reserved (0) 3 repeat key 2 Shift was down at last keypress 1 Alt was down at last keypress 0 Ctrl was down at last keypress

See Also: #03263

Bitfields for TI Professional System Configuration Word: Bit(s) Description (Table 03266)

0 drive A:
Installed

1 drive B:
Installed

2 drive C:
Installed

3 drive D:
Installed

4 drive A:
Is 80-track

5 drive A:
Is double-sided 6 60-Hz (USA,etc.) system instead of 50-Hz (Europe) 7 hard disk installed 8 serial port 1 installed 9 serial port 2 installed 10 serial port 3 installed 11 serial port 4 installed 14-12 installed graphics planes. 000 none. 001 plane A. 111 planes A, B, and C 15 clock installed

See Also: #03263

Category: Vendor-specific BIOS Extensions - Int 60h - T

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