Index for interrupt INT 48
Table of Contents by Order
48 - INT 48 - KEYBOARD - CORDLESS KEYBOARD TRANSLATION (PCjr)
48 - INT 48 - Z100 - Slave 8259 - S100 vectored line 0
48 - INT 48 - Watstar PC Network data pointer 1
48 - INT 48 - Acorn BBC Master 512 - "OSNEWL" - SEND NEWLINE TO OUTPUT STREAM
48 - INT 48 - Western Digital WD1002-27X SuperBIOS - DRIVE DATA (NOT A VECTOR!)
48 - INT 48 U - Compaq UILIB.EXE - API
4800 - INT 48 - TI Professional PC - SPEAKER DEVICE - SOUND SPEAKER
4801 - INT 48 - TI Professional PC - SPEAKER DEVICE - CHECK SPEAKER STATUS
4802 - INT 48 - TI Professional PC - SPEAKER DEVICE - SET SPEAKER FREQUENCY
4803 - INT 48 - TI Professional PC - SPEAKER DEVICE - TURN ON SPEAKER
4804 - INT 48 - TI Professional PC - SPEAKER DEVICE - TURN OFF SPEAKER
4805 - INT 48 - TI Professional PC - SPEAKER DEVICE - DELAY
4806 - INT 48 - TI Professional PC - CALCULATE CRC
4807 - INT 48 - TI Professional PC - PRINT ROM MESSAGE
4808 - INT 48 - TI Professional PC - DISPLAY SYSTEM ERROR MESSAGE
4809 - INT 48 - TI Professional PC - GET SYSTEM CONFIGURATION DATA
480A - INT 48 - TI Professional PC - GET EXTRA SYSTEM CONFIGURATION INFO ADDRESS
480B - INT 48 - TI Professional PC - GET EXTRA SYSTEM CONFIGURATION INFORMATION
481A70 - INT 48 U - Compaq UILIB.EXE - INSTALLATION CHECK
INT 48 - KEYBOARD - CORDLESS KEYBOARD TRANSLATION (PCjr) AL = scan code??? Note: This interrupt may be un-initialized (0000h:0000h) on old machines. This should be checked before calling or hooking this vector. MS-DOS/PC DOS 3.3x-4.x KEYB hooked the INT 48h handler. For AL <= 80h it checked that either ALT and neither CTRL key was pressed, and in that case, it cleared the CTRL flag in the BIOS variable at 0040:0017h and stored its contents in an internal variable, before continuing with the previous (non-zero) INT 48h handler. SeeAlso: INT 49"PCjr"Top
INT 48 - Z100 - Slave 8259 - S100 vectored line 0 SeeAlso: INT 47"Z100",INT 49"Z100"Top
INT 48 - Watstar PC Network data pointer 1 SeeAlso: INT 49"Watstar"Top
INT 48 - Acorn BBC Master 512 - "OSNEWL" - SEND NEWLINE TO OUTPUT STREAM Return: FLAGS destroyed Note: writes a carriage return (0Dh) followed by a linefeed (0Ah) SeeAlso: INT 40"Acorn",INT 47"Acorn",INT 49"Acorn"Top
INT 48 - Western Digital WD1002-27X SuperBIOS - DRIVE DATA (NOT A VECTOR!) Note: the second WD1002-27X controller in a system uses the low byte to store the number of drives controlled by the second controller, and the high word for temporary storage during track recalculation; the first controller uses offsets 74h-77h in the BIOS data area (refer to MEMORY.LST) to store data SeeAlso: INT 47"SuperBIOS"Top
INT 48 U - Compaq UILIB.EXE - API AX = function (see #03204) BX = call type (0002h) (see #03207) ??? Return: ??? Note: returns AX=FFFFh if 1000h<=AX<=2000h and AX is not one of the functions listed below SeeAlso: AX=1A70h (Table 03204) Values for valid UILIB function number: 1000h 1160h 12D0h 1430h 1570h 1680h 17F0h 1920h 1A90h 1010h 1170h 12E0h 1440h 1578h 1690h 1800h 1930h 1AA0h 1020h 1180h 12F0h 1450h 1580h 16A0h 1810h 1940h 1030h 1190h 1300h 1460h 1590h 16B0h 1820h 1950h 1040h 11A0h 1310h 1470h 1594h 16C0h 1830h 1960h 1050h 11B0h 1320h 1480h 1598h 16D0h 1840h 1970h 1060h 11C0h 1330h 1490h 15A0h 16E0h 1848h 1980h 1070h 11D0h 1340h 14A0h 15B0h 16F0h 1850h 1990h 1080h 11E0h 1350h 14B0h 15C0h 1700h 1860h 19A0h 1090h 11F0h 1360h 14B8h 15D0h 1710h 1870h 19B0h 1095h 1200h 1370h 14BBh 15D4h 1720h 1878h 19C0h 1098h 1210h 1380h 14C0h 15D8h 1730h 1880h 19D0h 10A0h 1220h 1390h 14D0h 15E0h 1735h 1890h 19E0h 10C0h 1230h 13A0h 14E0h 15F0h 1740h 1898h 19F0h 10D0h 1240h 13B0h 14F0h 1600h 1750h 18A0h 1A00h 10E0h 1250h 13B8h 1500h 1610h 1770h 18B0h 1A10h 10F0h 1260h 13C0h 1508h 1620h 1780h 18C0h 1A20h 1100h 1270h 13D0h 1510h 1630h 1790h 18D0h 1A30h 1110h 1280h 13E0h 1520h 1640h 17A0h 18E0h 1A40h 1120h 1290h 13F0h 1530h 1650h 17B0h 18F0h 1A50h 1130h 12A0h 1400h 1540h 1660h 17C0h 1900h 1A60h 1140h 12B0h 1410h 1550h 1664h 17D0h 1909h 1A70h 1150h 12C0h 1420h 1560h 1670h 17E0h 1910h 1A80hTop
INT 48 - TI Professional PC - SPEAKER DEVICE - SOUND SPEAKER AH = 00h AL = number of 25ms ticks sound should last Return: nothing Desc: sound the speaker at the current frequency setting (see AH=02h) for the indicated duration Notes: this function returns immediately; the sound is terminated by the timer interrupt handler if a new sound is requested while one is already in progress, the previous sound is terminated immediately and the new sound takes its place SeeAlso: AH=01h,AH=02h,AH=03h,AH=04h,AH=06h,AH=08h,AH=0Ah,AH=0Bh SeeAlso: INT 40"TI Professional",INT 49/AH=01h"TI" SeeAlso: INT 4A/AH=00h"TI",INT 4C"TI Professional",INT 4D/AH=00hTop
INT 48 - TI Professional PC - SPEAKER DEVICE - CHECK SPEAKER STATUS AH = 01h Return: ZF clear if speaker is currently on ZF set if speaker is currently off SeeAlso: AH=00h,AH=02h,AH=03h,AH=04h,AH=06h,AH=08h,AH=0Ah,AH=0BhTop
INT 48 - TI Professional PC - SPEAKER DEVICE - SET SPEAKER FREQUENCY AH = 02h CX = frequency divisor (freq = 1250000 / CX) Return: nothing SeeAlso: AH=00h,AH=01h,AH=03h,AH=04h,AH=06h,AH=08h,AH=0Ah,AH=0BhTop
INT 48 - TI Professional PC - SPEAKER DEVICE - TURN ON SPEAKER AH = 03h Return: nothing Desc: turn on the speaker at the current frequency, leaving it on until explicitly turned off with AH=04h or the end of a subsequent AH=00h SeeAlso: AH=00h,AH=01h,AH=02h,AH=04h,AH=06h,AH=08h,AH=0Ah,AH=0BhTop
INT 48 - TI Professional PC - SPEAKER DEVICE - TURN OFF SPEAKER AH = 04h Return: nothing SeeAlso: AH=00h,AH=01h,AH=02h,AH=03h,AH=04h,AH=06h,AH=08h,AH=0Ah,AH=0BhTop
INT 48 - TI Professional PC - SPEAKER DEVICE - DELAY AH = 05h CX = desired delay in milliseconds Return: after delay expires Note: the delay is only approximate, and may be longer than requested SeeAlso: AH=00h,AH=01h,AH=02h,AH=03h,AH=04h,AH=06h,AH=08h,AH=0Ah,AH=0BhTop
INT 48 - TI Professional PC - CALCULATE CRC AH = 06h ES:BX -> memory block for which to calculate CRC BP = size of block in bytes Return: DX = CRC for block ZF set if DX = 0000h Note: if the CRC of a memory block is appended to the block, then the CRC of the block plus CRC should equal 0000h SeeAlso: AH=00h,AH=01h,AH=02h,AH=03h,AH=04h,AH=06h,AH=08h,AH=0Ah,AH=0BhTop
INT 48 - TI Professional PC - PRINT ROM MESSAGE AH = 07h SI = offset of ASCIZ message string within segment F400h Return: nothing SeeAlso: AH=00h,AH=01h,AH=02h,AH=03h,AH=04h,AH=06h,AH=08h,AH=0Ah,AH=0BhTop
INT 48 - TI Professional PC - DISPLAY SYSTEM ERROR MESSAGE AH = 08h BX = error number Return: nothing Desc: displays the error message " ** System Error ** - xxxx" where xxxx is the hexadecimal value in BX SeeAlso: AH=00h,AH=01h,AH=02h,AH=03h,AH=04h,AH=06h,AH=08h,AH=0Ah,AH=0BhTop
INT 48 - TI Professional PC - GET SYSTEM CONFIGURATION DATA AH = 09h Return: ES:BX -> system configuration word (see #03227) SeeAlso: AH=00h,AH=01h,AH=02h,AH=03h,AH=04h,AH=06h,AH=08h,AH=0Ah,AH=0BhTop
INT 48 - TI Professional PC - GET EXTRA SYSTEM CONFIGURATION INFO ADDRESS AH = 0Ah Return: ES:BX -> configuration information (see #03205) SeeAlso: AH=00h,AH=01h,AH=02h,AH=03h,AH=04h,AH=06h,AH=08h,AH=0Bh Format of TI Professional PC extra system configuration information: Offset Size Description (Table 03205) -3 WORD memory size in paragraphs 00h BYTE drive type byte (see #03206) 01h WORD extra system configuration word 1 bit 0: 8087 is present bits 15-1: reserved (0) 03h WORD extra system configuration word 2 bits 15-0: reserved (0) Bitfields for TI Professional PC drive type byte: Bit(s) Description (Table 03206) 0 drive A is double-sided 1 drive A has 80 tracks instead of 40 2 drive B is double-sided 3 drive B has 80 tracks instead of 40 4 drive C is double-sided 5 drive C has 80 tracks instead of 40 6 drive D is double-sided 7 drive D has 80 tracks instead of 40 Note: the type for drive A is determined by motherboard switches; the remaining drives' types are set from a table in IO.SYS SeeAlso: #03205Top
INT 48 - TI Professional PC - GET EXTRA SYSTEM CONFIGURATION INFORMATION AH = 0Bh Return: AL = drive type byte (see #03206) BX = extra system configuration word 1 (see #03205) CX = extra system configuration word 2 (see #03205) AH destroyed SeeAlso: AH=00h,AH=01h,AH=02h,AH=03h,AH=04h,AH=06h,AH=08h,AH=0AhTop
INT 48 U - Compaq UILIB.EXE - INSTALLATION CHECK
AX = 1A70h
BX = call type (see #03207)
Return: CX = 5649h ('VI') if installed
DX = 4557h ('EW') if installed
AX = version??? (0106h)
(Table 03207)
Values for UILIB call type:
0000h near
0001h far
0002h INT (only valid call type when using INT 48)
0003h near
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