Magnum One/Magnum One (Mid-American Digital) (Disc Manufacturing).iso/d12/asm.arc/BIOS.MAC

Text File | 1988-11-20 | 9KB | 493 lines

;
;            BIOS Macros
;
;    These macros define the indeterfaces to the BIOS.  These macros aid in
; making calls to BIOS from other assembly language routines.  These macros
; provide the complete interface to the particular BIOS function.
;
;
;        LDREG
;
;    This macro is an "inner" macro for the use by the BIOS interface macros.
; It allows the caller of a macro to specify a register or a literal value as
; the parameter to the macro.  This macro loads the correct register specified
; by the caller of the macro with the contents of the register, literal or
; memory location also specified.  No code will be generated if the two
; parameters are the same.
;
ldreg        macro        destreg,source
        ifdif        <destreg>,<source>
        mov        destreg,source
        endif
        endm
;
;        TSTNSET
;
;    This macro will compare the value of two fields, if they are equal the
; third parameter will be OR'd into AL.
;
tstnset     macro        src1,src2,orval
        ifidn        <src1>,<src2>
        or        al,orval
        endif
        endm
;
;        IRS232
;
;    This macro will generate a call to BIOS to initialize the RS232 port.
;
irs232        macro        initparms,linenum
        ldreg        dx,linenum
        ldreg        al,initparms
        mov        ah,0
        int        14h
        endm
;
;        IRS232A
;
;    This macro will generate a call to BIOS to initialize the RS232 port.
; This macro allows the fields to be specified that initialize the port.
;
irs232a     macro        baudrate,parity,stopbits,datalen,linenum
        ldreg        dx,linenum
        sub        ax,ax
;        tstnset     baudrate,110,00000000b
        tstnset     baudrate,150,00100000b
        tstnset     baudrate,300,01000000b
        tstnset     baudrate,600,01100000b
        tstnset     baudrate,1200,10000000b
        tstnset     baudrate,2400,10100000b
        tstnset     baudrate,4800,11000000b
        tstnset     baudrate,9600,11100000b
;        tstnset     parity,none,00000000b
        tstnset     parity,odd,00001000b
        tstnset     parity,even,00011000b
;        tstnset     stopbits,1,00000000b
        tstnset     stopbits,2,00000100b
        tstnset     datalen,7,00000010b
        tstnset     datalen,8,00000011b
        int        14h
        endm
;
;        SENDCHR
;
;    This macro will send a character over the RS232 line.
;
sendchr     macro        char,linenum
        ldreg        dx,linenum
        ldreg        al,char
        mov        ah,1
        int        14h
        endm
;
;        RECVCHR
;
;    This macro will recieve a character from the RS232 line.
;
recvchr     macro        linenum
        ldreg        dx,linenum
        mov        ah,2
        int        14h
        endm
;
;        COMSTAT
;
;    This macro will get the status of the RS232 line.
;
comstat     macro        linenum
        ldreg        dx,linenum
        mov        ah,3
        int        14h
        endm
;
;        GETKBCHAR
;
;    This macro will get a character from the keyboard.
;
getkbchar    macro
        mov        ah,0
        int        16h
        endm
;
;        TSTKBCHAR
;
;    This macro will test to see if a character is available from the keybd.
;
tstkbchar    macro
        mov        ah,1
        int        16h
        endm
;
;        GETKBSHIFT
;
;    This macro will get the keyboard shift state.
;
getkbshift    macro
        mov        ah,2
        int        16h
        endm
;
;        DSKRESET
;
;    This macro will reset the diskette controller.
;
dskreset    macro
        mov        ah,0
        int        16h
        endm
;
;        GETDSKSTAT
;
;    This macro will get the diskette status of the last operation performed.
;
getdskstat    macro
        mov        ah,1
        int        16h
        endm
;
;        DSKREAD
;
;    This macro will read from the diskette.
;
dskread     macro        drive,head,track,sector,numsecs,buffoff
        ldreg        dl,drive
        ldreg        dh,head
        ldreg        ch,track
        ldreg        cl,sector
        ldreg        al,numsecs
        ldreg        bx,buffoff
        mov        ah,2
        int        16h
        endm
;
;        DSKWRITE
;
;    This macro will write to the diskette.
;
dskwrite    macro        drive,head,track,sector,numsecs,buffoff
        ldreg        dl,drive
        ldreg        dh,head
        ldreg        ch,track
        ldreg        cl,sector
        ldreg        al,numsecs
        ldreg        bx,buffoff
        mov        ah,3
        int        16h
        endm
;
;        DSKVERFY
;
;    This macro will verify the diskette.
;
dskverfy    macro        drive,head,track,sector,numsecs,buffoff
        ldreg        dl,drive
        ldreg        dh,head
        ldreg        ch,track
        ldreg        cl,sector
        ldreg        al,numsecs
        ldreg        bx,buffoff
        mov        ah,4
        int        16h
        endm
;
;        DSKFORMAT
;
;    This macro will format the diskette.
;
dskformat    macro        drive,head,track,sector,numsecs,buffoff
        ldreg        dl,drive
        ldreg        dh,head
        ldreg        ch,track
        ldreg        cl,sector
        ldreg        al,numsecs
        ldreg        bx,buffoff
        mov        ah,5
        int        16h
        endm
;
;        PRNTCHAR
;
;    This macro will print a character on the printer.
;
prntchar    macro        char,printer
        ldreg        al,char
        ldreg        dx,printer
        mov        ah,0
        int        17h
        endm
;
;        INIPRNTR
;
;    This macro will initialize the printer.
;
iniprntr    macro        printer
        ldreg        dx,printer
        mov        ah,1
        int        17h
        endm
;
;        PRNTSTAT
;
;    This macro will get the printer status.
;
prntstat    macro        printer
        ldreg        dx,printer
        mov        ah,2
        int        17h
        endm
;
;        SETCRTMODE
;
;    This macro will set the vidio mode for the CRT.
;
setcrtmode    macro        modeval
        ldreg        al,modeval
        mov        ah,0
        int        10h
        endm
;
;        SCRTMODE
;
;    This macro will set the vidio mode for the CRT.  It will allow the
; caller of the macro to set the mode symbolicly.
;
scrtmode    macro        modeval
        sub        al,al
;        tstnset     modeval,bw40x25,0
        tstnset     modeval,color40x25,1
        tstnset     modeval,bw80x25,2
        tstnset     modeval,color80x25,3
        tstnset     modeval,color320x200,4
        tstnset     modeval,bw320x200,5
        tstnset     modeval,bw640x200,6
        mov        ah,0
        int        10h
        endm
;
;        SETCURTYPE
;
;    This macro will set the cursor type.
;
setcurtype    macro        start,end
        ldreg        ch,start
        ldreg        cl,end
        mov        ah,1
        int        10h
        endm
;
;        SETCURPOS
;
;    This macro will set the cursor position.
;
setcurpos    macro        row,col,crtpage
        ldreg        dh,row
        ldreg        dl,col
        ldreg        bh,crtpage
        mov        ah,2
        int        10h
        endm
;
;        GETCURPOS
;
;    This macro will get the cursor position.
;
getcurpos    macro        crtpage
        ldreg        bh,crtpage
        mov        ah,3
        int        10h
        endm
;
;        GETPENPOS
;
;    This macro will get the light pen position.
;
getpenpos    macro
        mov        ah,4
        int        10h
        endm
;
;        SETPAGE
;
;    This macro will set the display page.
;
setpage     macro        crtpage
        ldreg        al,crtpage
        mov        ah,5
        int        10h
        endm
;
;        SCROLLUP
;
;    This macro will scroll the page up.
;
scrollup    macro        lines,ulcrow,ulccol,lrcrow,lrccol,attr
        ldreg        al,lines
        ldreg        ch,ulcrow
        ldreg        cl,ulccol
        ldreg        dh,lrcrow
        ldreg        dl,lrccol
        ldreg        bh,attr
        mov        ah,6
        int        10h
        endm
;
;        SCROLLDOWN
;
;    This macro will scroll the page down.
;
scrolldown    macro        lines,ulcrow,ulccol,lrcrow,lrccol,attr
        ldreg        al,lines
        ldreg        ch,ulcrow
        ldreg        cl,ulccol
        ldreg        dh,lrcrow
        ldreg        dl,lrccol
        ldreg        bh,attr
        mov        ah,7
        int        10h
        endm
;
;        READATRCHR
;
;    This macro will read the attribute and character at the current cursor
; position.
;
readatrchr    macro        page
        ldreg        bh,page
        mov        ah,8
        int        10h
        endm
;
;        WRITEATRCHR
;
;    This macro will write the attribute and character at the current cursor
; position.
;
writeatrchr    macro        char,attr,count,page
        ldreg        al,char
        ldreg        bl,attr
        ldreg        cx,count
        ldreg        bh,page
        mov        ah,9
        int        10h
        endm
;
;        WRITECHAR
;
;    This macro will write the character at the current cursor position.
;
writechar    macro        char,count,page
        ldreg        al,char
        ldreg        cx,count
        ldreg        bh,page
        mov        ah,10
        int        10h
        endm
;
;        SETPALETTE
;
;    This macro will set the color palette.
;
setpalette    macro        colorid,colorval
        ldreg        bh,colorid
        ldreg        bl,colorval
        mov        ah,11
        int        10h
        endm
;
;        WRITEDOT
;
;    This macro will write a dot on the CRT.
;
writedot    macro        row,col,color
        ldreg        dx,row
        ldreg        cx,col
        ldreg        al,color
        mov        ah,12
        int        10h
        endm
;
;        READDOT
;
;    This macro will read a dot from the CRT.
;
readdot     macro        row,col
        ldreg        dx,row
        ldreg        cx,col
        mov        ah,13
        int        10h
        endm
;
;        TELEWRITE
;
;    This macro will perform a teletype write.
;
telewrite    macro        char,color,page
        ldreg        al,char
        ldreg        bl,color
        ldreg        bh,page
        mov        ah,14
        int        10h
        endm
;
;        VIDIOSTATE
;
;    This macro will get the current vidio state.
;
vidiostate    macro
        mov        ah,15
        int        10h
        endm
;
;        GETMEMSIZE
;
;    This macro will return the amount of memory in 1K increments.
;
getmemsize    macro
        int        12h
        endm
;
;        EQUIPMENT
;
;    This macro will return the kinds of devices that are attached to the
; system.
;
equipment    macro
        int        11h
        endm
;
;        CASMOTOR
;
;    This macro will turn the cassette motor on or off.
;
casmotor    macro        motorstate
        ifidn        <motorstate>,<on>
        mov        ah,0
        endif
        ifidn        <motorstate>,<off>
        mov        ah,1
        endif
        int        15h
        endm
;
;        CASREAD
;
;    This macro will read 256 byte blocks from the cassette.
;
casread     macro        numbytes,buffoff
        ldreg        cx,numbytes
        ldreg        bx,buffoff
        mov        ah,2
        int        15h
        endm
;
;        CASWRITE
;
;    This macro will write 256 byte blocks to the cassette.
;
caswrite    macro        numbytes,buffoff
        ldreg        cx,numbytes
        ldreg        bx,buffoff
        mov        ah,3
        int        15h
        endm