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decus_20tap4_198111
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decus/20-0125/sysmac.sml
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.MACRO GRAPHIC
;
; GROUP 1 (GENERAL)
;
DPC=^O172000 ; DISPLAY PROGRAM COUNTER
DSR=^O172002 ; DISPLAY STATUS REGISTER
XSTAT=^O172004 ; X STATUS REGISTER
YSTAT=^O172006 ; Y STATUS REGISTER
CHAR=^O100000 ; CHARACTER MODE
SHORTV=^O104000 ; SHORT VECTOR MODE
LONGV=^O110000 ; LONG VECTOR MODE
POINT=^O114000 ; POINT MODE
RELATV=^O130000 ; RELATIVE POINT MODE
GRAPHX=^O120000 ; GRAPHPLOT X MODE
GRAPHY=^O124000 ; GRAPHPLOT Y MODE
;
INT0=^O2000 ; INTENSITY 0 (DIMMEST)
INT1=^O2200 ;
INT2=^O2400 ;
INT3=^O2600 ;
INT4=^O3000 ; INTENSITY LEVELS
INT5=^O3200 ;
INT6=^O3400 ;
INT7=^O3600 ; INTENSITY 7 (BRIGHTEST)
;
LPOFF=^O100 ; LIGHT PEN OFF
LPON=^O140 ; LIGHT PEN ON
;
BLKOFF=^O20 ; BLINK OFF
BLKON=^O30 ; BLINK ON
;
LINE0=^O4 ; SOLID LINE
LINE1=^O5 ; LONG DASH
LINE2=^O6 ; SHORT DASH
LINE3=^O7 ; DOT DASH
;
; GROUP 2 (DISPLAY JUMP)
;
DJMP=^O160000 ; DISPLAY JUMP
;
; GROUP 3 (DISPLAY NO-OP)
;
DNOP=^O164000 ; DISPLAY NO OPERATION
;
; GROUP 4 (LOAD STATUS REGISTER A)
;
STATSA=^O170000 ; LOAD STATUS REGISTER A INSTRUCTION
DSTOP=^O173400 ; DISPLAY STOP AND INTERRUPT
SINON=^O1400 ; STOP INTERRUPT ON
SINOF=^O1000 ; STOP INTERRUPT OFF
LPLITE=^O200 ; LIGHT PEN HIT ON
LPDARK=^O300 ; LIGHT PEN HIT OFF
ITAL0=^O40 ; ITALICS OFF (NORMAL FONT)
ITAL1=^O60 ; ITALICS ON (ITALICS FONT)
SYNC=^O4 ; HALT AND RESUME IN SYNC
;
; GROUP 5 (LOAD STATUS REGISTER B)
;
STATSB=^O174000 ; LOAD STATUS REGISTER B INSTRUCTION
INCR=^O100 ; ENABLE GRAPHPLOT INCREMENT
;
; GROUP 6 (VECTOR/POINT MODES)
;
INTX=^O40000 ; INTENSIFY VECTOR OR POINT
MAXX=^O1777 ; MAXIMUM DELTA X COMPONENT
MAXY=^O1377 ; MAXIMUM DELTA Y COMPONENT
MINUSX=^O20000 ; NEGATIVE DELTA X COMPONENT
MINUSY=^O20000 ; NEGATIVE DELTA Y COMPONENT
;
; GROUP 7 (SHORT VECTOR MODE)
;
MAXSX=^O17600 ; MAXIMUM DELTA X COMPONENT
MAXSY=^O77 ; MAXIMUM DELTA Y COMPONENT
MISVX=^O20000 ; NEGATIVE DELTA X COMPONENT
MISVY=^O100 ; NEGATIVE DELTA Y COMPONENT
.MCALL SGM,SV,JUMP,LV,PT,GRF,RPT,LDA,LDB
.ENDM
;
; THE FOLLOWING MACRO GRAPHIC INSTRUCTIONS
; WERE WRITTEN BY DAVE MASON ('73 - '74)
;
; THEY ARE NOT COMPATIBLE WITH THE STANDARD
; GT40 DEFINITIONS ABOVE
;
; SET GRAPHIC MODE INSTRUCTION
;
.MACRO SGM MODE,LINE,INT,LP,BL
..=^O7&MODE+^O20*^O4000
.IF NB,LINE
..=LINE&^O3+^O4+..
.ENDC
.IF NB,INT
..=INT&^O7+^O10*^O200+..
.ENDC
.IF NB,LP
..=LP&1+^O2*^O40+..
.ENDC
.IF NB,BL
..=BL&1+^O2*^O10+..
.ENDC
.WORD ..
.ENDM
;
; SHORT VECTOR DATA
;
.MACRO SV X,Y,I
.IF LT,X
..=-X&^O77+^O100*^O200
.IFF
..=X&^O77*^O200
.ENDC
.IF LT,Y
..=-Y&^O77+^O100+..
.IFF
..=Y&^O77+..
.ENDC
.IF NB,I
..=..+^O40000
.ENDC
.WORD ..
.ENDM
;
; LONG VECTOR DATA
;
.MACRO LV X,Y,I
.IF LT,X
..=-X&^O1777+^O20000
.IFF
..=X&^O1777
.ENDC
.IF NB,I
..=..+^O40000
.ENDC
.WORD ..
.IF LT,Y
..=-Y&^O1777+^O20000
.IFF
..=Y&^O1777
.ENDC
.WORD ..
.ENDM
;
; POINT DATA
;
.MACRO PT X,Y,I
.IF NB,I
X&^O1777+^O40000
.IFF
X&^O1777
.ENDC
Y&^O1777
.ENDM
;
; GRAPH X DATA
;
.MACRO GRF X
X&^O1777
.ENDM
;
; RELATIVE POINT DATA
;
.MACRO RPT X,Y,I
SV X,Y,I
.ENDM
;
; LOAD STATUS REGISTER A INSTRUCTION
;
.MACRO LDA ST,INT,LPI,IT,SY
..=^O170000
.IF NB,INT
..=INT&1+^O2*^O400+..
.ENDC
.IF NB,LPI
..=LPI&1+^O2*^O100+..
.ENDC
.IF NB,IT
..=IT&1+^O2*^O20+..
.ENDC
.IF NB,ST
..=ST&1*^O2000+..
.ENDC
.IF NB,SY
..=SY&1*^O2+..
.ENDC
.WORD ..
.ENDM
;
; LOAD STATUS REGISTER B INSTRUCTION
;
.MACRO LDB GP
GP&^O77+^O174100
.ENDM
;
; DISPLAY JUMP INSTRUCTION
;
.MACRO JUMP X
^O160000,X
.ENDM
;
; DISPLAY NO-OP WITH DATA
;
.MACRO NOPD X
.IF NB,X
X&^O3777+^O164000
.IFF
^O164000
.ENDC
.ENDM
;
; THE FOLLOWING MACROS WERE WRITTEN BY
; LEIGH CLAYTON ('73 - '74) NOTE
; THAT THE APPROPRIATE FP40 ROUTINES MUST BE
; ASSEMBLED ALONG WITH THE CURRENT PROGRAM
; NO FLOATING POINT ROUTINES ARE USED IN THE
; GIDUS PROGRAM
;
.MACRO FP40
.MCALL F.ADD,F.SUB,F.MUL,F.DIV,F.ABS,F.NEG,F.FIX,F.FLT,F.FXR
.MCALL F.TST,F.MOV,F.CMP,F.CLR
.MCALL F.SIN,F.COS,F.SQR,F.LDX,F.STX
.MCALL F.SEOF,F.SEUF,F.SDBZ,F.SICE
.ENDM
;
.MACRO F.ADD A,B,C
JSR %0,.F$ADD
.WORD A,B,C ;C <-- A+B
.ENDM
;
.MACRO F.SUB A,B,C
JSR %0,.F$SUB
.WORD A,B,C ; C <-- A-B
.ENDM
;
.MACRO F.MUL A,B,C
JSR %0,.F$MUL
.WORD A,B,C ; C <-- A <MULTIPLIED.BY> B
.ENDM
;
.MACRO F.DIV A,B,C
JSR %0,.F$DIV
.WORD A,B,C ; C <-- A <DIVIDED.BY> B
.ENDM
;
.MACRO F.ABS A,B
JSR %0,.F$ABS
.WORD A,B ; B <-- <ABSOLUTE.VALUE.OF> A
.ENDM
;
.MACRO F.NEG A,B
JSR %0,.F$NEG
.WORD A,B ; B <-- <NEGATIVE.OF> A
.ENDM
;
.MACRO F.FIX A,I
JSR %0,.F$FIX
.WORD A,I ; I <-- <INTEGER.PART.OF> A
.ENDM
;
.MACRO F.FLT I,A
JSR %0,.F$FLT
.WORD I,A ; A <-- <FLOATING.REPRESENTATION.OF> I
.ENDM
;
.MACRO F.FXR A,I,B
JSR %0,.F$FXR
.WORD A,I,B ; FIX A INTO I, FRACTION GOES INTO B
.ENDM
;
.MACRO F.TST A
BIT #^O077600,A ; SETT CC BY F.P. NUMBER
BEQ .+6
TST A
.ENDM
;
.MACRO F.MOV A,B
MOV A,B ; MOVE F.P. NUMBER
MOV A'+2,B'+2
.ENDM
;
.MACRO F.CMP A,B
JSR %0,.F$CMP
.WORD A,B ; COMPARE A AND B
.ENDM
;
.MACRO F.SIN A,B
JSR %0,.F$SIN
.WORD A,B ; B <-- SIN (A) // A IS IN RADIANS
.ENDM
;
.MACRO F.COS A,B
JSR %0,.F$COS
.WORD A,B ; B<-- COS(A) /A IS IN RADIANS
.ENDM
;
.MACRO F.SQR A,B
JSR %0,.F$SQR
.WORD A,B ; B <-- SQRT(A)
.ENDM
;
.MACRO F.LDX I,A,B
JSR %0,.F$LDX
.WORD I,A,B ; FORM EXCESS 200 EXP FROM I, AND TAKE
; ; CHARACTERISTIC FROM A, TO FORM B
.ENDM
;
.MACRO F.STX A,I
JSR %0,.F$STX
.WORD A,I ; I GETS EXPONENT FROM A
; ; ( *NOT* IN EXCESS 200 FORM )
.ENDM
;
.MACRO F.SEOF ADDR
JSR %0,.F$XOF ; SET/RESET EXP.OVRF ERROR ADDRESS
.IIF B,ADDR,.WORD 0 ; RESET TO NULL IF BLANK PARAM
.IIF NB,ADDR,.WORD ADDR ; NEW ADDRESS IF SPECIFIED
.ENDM
;
.MACRO F.SEUF ADDR
JSR %0,.F$XUF ; EXP. UNDERFLOW ERROR
.IIF B,ADDR,.WORD 0
.IIF NB,ADDR,.WORD ADDR
.ENDM
;
.MACRO F.SDBZ ADDR
JSR %0,.F$DV0 ; DIVISION BY ZERO
.IIF B,ADDR,.WORD 0
.IIF NB,ADDR,.WORD ADDR
.ENDM
;
.MACRO F.SICE ADDR
JSR %0,.F$ICN ; INTEGER CONVERSION (FIX)
.IIF B,ADDR,.WORD 0
.IIF NB,ADDR,.WORD ADDR
.ENDM
;
.MACRO F.CLR A
CLR A ; SET F.P. VALUE TO ZERO
CLR A+2
.ENDM