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INT 11 - EQUIPMENT DETERMINATION
Return: AX = Equipment Flag Bits
| Equipment
Flag Bits |
| Bit |
Dec |
Hex |
Description |
| 0 |
1 |
0001h |
diskette installed |
| 1 |
2 |
0002h |
8087 present |
| 2 |
4 |
0004h |
mouse installed (PS2
only) |
| 2 |
4 |
0004h |
number of
16K banks of RAM on motherboard (PC only)
number of 64K banks of RAM on motherboard (XT only)
always = 11 on AT and above |
| 3 |
8 |
0008h |
| 4 |
16 |
0010h |
initial
video mode
01 = 40x25 color
10 = 80x25 color
11 = 80X25 IBM monochrome |
| 5 |
32 |
0020h |
| 6 |
64 |
0040h |
number of
diskette drives (only if bit 0 = 1)
00 = 1, 01 = 2, 10 = 3, 11
= 4 |
| 7 |
128 |
0080h |
| 8 |
256 |
0100h |
0
= dma present, 1 = no dma
on system (PCjr???) |
| 9 |
512 |
0200h |
number of
RS232 cards |
| 10 |
1024 |
0400h |
| 11 |
2048 |
0800h |
| 12 |
4096 |
1000h |
game I/O attached |
| 13 |
8192 |
2000h |
serial printer
installed (PCjr)
internal modem installed (PC/Convertible) |
| 14 |
16384 |
4000h |
number of
printers |
| 15 |
32768 |
8000h |
See Also 0040:0010 Int/13h/08h |