perm filename III.FAI[GEM,BGB]2 blob
sn#041573 filedate 1973-05-14 generic text, type C, neo UTF8
COMMENT ⊗ VALID 00011 PAGES
C REC PAGE DESCRIPTION
C00001 00001
C00003 00002 III DISPLAY SUBROUTINES - BGB - JANUARY 1973.
C00004 00003 SUBRS DPYSET,DPYBIG,DPYBRT Set buffer,char. size, brightness*
C00006 00004 SUBRS AVECT,AIVECT,RVECT,RIVECT Vectors
C00009 00005 SUBRS DPYSTR,DTYO,DPYOUT Output string,character, POG *
C00011 00006 SUBRS OCTDPY,DECDPY,FLODPY Numeric display *
C00014 00007 NSUBR IIIDPY,WINDOW,GLASS Display device routine. *
C00017 00008 NSUBR VDPY,VERTEX SPECIAL VERTEX DISPLAY *
C00018 00009 NSUBR EDPY,EDGE SPECIAL EDGE DISPLAY *
C00020 00010 NSUBR FDPY,FACE Special Face display *
C00022 00011 NSUBR IDPY,NODE Identifier display. *
C00024 ENDMK
C⊗;
;III DISPLAY SUBROUTINES - BGB - JANUARY 1973.
↓A←1↔↓B←2↔↓C←3
INTERN BUFDPY,DPYPTR
BUFDPY: .+2↔=100↔BLOCK =100
INTERN DPYBUF
DPYBUF: DPYBU.↔=2048
DPYBU.: BLOCK =2048
IGNORE: BLOCK 1
SIZBRT: BLOCK 1
DPYCOL: BLOCK 1
DPYPTR: BLOCK 1
BUFEND: BLOCK 1
BUFHD: BLOCK 2 ;UPG ARGUMENT. ;ADDRESS ↔ LENGTH.
;VERNIER III TEXT POSITIONING.
VERNX ←← 14
VERNY ←← 11
;SUBRS DPYSET,DPYBIG,DPYBRT ;Set buffer,char. size, brightness*
;____________________________________________________________________
NSUBR DPYSET,BUFFER ;Initialize a display buffer *
LAC 1,BUFFER↔CDR 2,-1(1) ;BUFFER SIZE.
ADDI 2,-1(1)↔DAC 2,BUFEND
ADDI 1,2↔DAC 1,BUFHD ;POINT TO THIRD WORD.
SETZM IGNORE
SETZM SIZBRT
CLR2: LAC A,BUFHD ;BLIT THE BUFFER WITH THE III-TEXT OPCODE 1.
LACI B,1↔DAC B,1(A)
LACI B,2(A)↔LIPI B,1(A)
BLT B,@BUFEND
PUSH P,(P)↔GO LV3
SUBREND DPYSET
;____________________________________________________________________
NSUBR DPYBIG,SIZE ;Set character size
;USES AC 1
; SKIPE IGNORE↔POP1J
; LAC A,SIZE↔LACI C,46↔DPB A,[POINT 3,3,27]
; PUSH P,(P)↔GO LV2
LAC A,SIZE↔DPB A,[POINT 3,SIZBRT,27] ;REMEMBER NEW SIZE
POP1J
SUBREND DPYBIG
;____________________________________________________________________
NSUBR DPYBRT,SIZE ;Set brightness
;USES AC 1
; SKIPE IGNORE↔POP1J
; LAC 1,SIZE↔LACI C,46↔DPB A,[POINT 3,3,24]
; PUSH P,(P)↔GO LV2
LAC A,SIZE↔DPB A,[POINT 3,SIZBRT,24] ;REMEMBER NEW BRIGHTNESS
POP1J
SUBREND DPYBRT
;SUBRS AVECT,AIVECT,RVECT,RIVECT ;Vectors
INTERN RIVECT,RVECT,AIVECT,AVECT
COMMENT ⊗
The III display processor is a stored program computer,
these III subroutines make a III program using only two display
operations: the long vector operation and the text operation. The
pointer to the display buffer is always maintained as a BYTE POINTER
to the last character displayed. The flag named IGNORE is set when
display buffer overflow occurs and all further display calls are
ignored until the buffer is used. The III instruction formats are
given below, unlike most CPU (but like must display processors of
its day) the immediate data fields are in the left portion of the
instruction and the opcode in the right.
TEXT DISPLAY WORD: ASCII/ABCDE/ + 1
LONG VECTOR WORD: BYTE(11)X,Y(3)BRT,SIZ(7)OPCODE
The long vector opcodes appear in the following four lines: ⊗
;USES AC 1-3
;DTYO DEPENDS ON THIS
RIVECT: SKIPA C,[046] ;RELATIVE INVISIBLE VECTOR.
RVECT: LACI C, 006 ↔GO LV0 ;RELATIVE VISIBLE VECTOR.
AIVECT: SKIPA C,[146] ;ABSOLUTE INVISIBLE VECTOR.
AVECT: LACI C, 106 ;ABSOLUTE VISIBLE VECTOR.
SETZM DPYCOL ;RESET TAB LOCATION
LV0: SKIPGE IGNORE↔POP2J
LV: LAC A,-2(P)↔LAC B,-1(P) ;PICKUP X AND Y.
LVC: DPB A,[POINT 11,C,10] ;PACK X INTO III-WORD.
DPB B,[POINT 11,C,21] ;PACK Y INTO III-WORD.
SKIPE A,SIZBRT ;NEW BRIGHTNESS OR SIZE?
GO [ IOR C,A↔DZM SIZBRT↔GO LV2] ;YES, SET IT
LV2: AOS A,DPYPTR↔DAC C,(A) ;PACK WORD INTO III-BUFFER.
LV3: LIPI A,<(<POINT 7,0,35>)> ;UPDATE DPYPTR...
DAC A,DPYPTR↔LACI A,(A) ;WHICH IS A BYTE-POINTER.
CAML A,BUFEND↔SETOM IGNORE ;CHECK FOR BUFFER OVERFLOW.
POP2J
;SUBRS DPYSTR,DTYO,DPYOUT ;Output string,character, POG *
;____________________________________________________________________
NSUBR DPYSTR,TEXT
;USES AC 1,3
LAC 3,TEXT↔LIPI 3,440700
ILDB 3↔JUMPE POP1J.
CALL(DTYO,0)↔GO DPYSTR+2
SUBREND DPYSTR
;____________________________________________________________________
NSUBR DTYO,CHAR
;USES AC 1
;DPYSTR DEPENDS ON DTYO NOT CLOBBERING 3
SKIPE SIZBRT
GO [ PUSHP 0↔PUSHP 2↔PUSHP 3
CALL(RIVECT,[0],[0])
POPP 3↔POPP 2↔POPP 0
GO .+1]
LAC 1,CHAR
CAIN 1,15
SETOM DPYCOL
CAIN 1,11
GO DOTAB
DTYO1: IDPB 1,DPYPTR
AOS DPYCOL
CDR 1,DPYPTR↔CAML 1,BUFEND
SETOM IGNORE↔POP1J
DOTAB: CALL(DTYO,[" "]) ;We got a tab, put out spaces until
MOVE 1,DPYCOL ;column is divisible by 8
TRNE 1,7
GO DOTAB
CDR 1,DPYPTR
POP1J
SUBREND DTYO
;____________________________________________________________________
NSUBR DPYOUT,POG
SKIPN 1,BUFHD↔GO .+6
LAC 2,DPYPTR↔DAC 2,-2(1)
LACI 2,2(2)↔SUB 2,1↔DAC 2,-1(1)
CDR B,DPYPTR↔SUB B,BUFHD
AOS B↔DAC B,BUFHD+1
LAC 1,POG↔DPB A,[POINT 4,UPGOP,12]
XCT UPGOP
POP1J
UPGOP: 703B8+BUFHD
SUBREND DPYOUT
;SUBRS OCTDPY,DECDPY,FLODPY ;Numeric display *
;____________________________________________________________________
NSUBR OCTDPY,INTEGER ;OCTAL NUMBER DISPLAY.
Q←15 ↔ N←13
SKIPA↔GO L2
LAC 14,INTEGER↔LAC Q,[POINT 3,14,-1]↔LACI N,6
L1: ILDB Q↔IORI 60↔CALL(DTYO,0)↔SOJG N,L1
CALL(DTYO,[" "])
L2: LAC 14,INTEGER↔LAC Q,[POINT 3,14,17]↔LACI N,6
L3: ILDB Q↔IORI 60↔CALL(DTYO,0)↔SOJG N,L3
POP1J
SUBREND OCTDPY;25-MAR-73(BGB)
;____________________________________________________________________
NSUBR DECDPY,INTEGER ;DECIMAL NUMBER DISPLAY.
LAC 1,INTEGER↔POPP -1(P) ;FETCH ARG AND MOVE RET. ADR.
L1: JUMPGE 1,L2 ;TEST FOR NEGATIVE NUMBER.
MOVM 2,1↔CALL(DTYO,["-"]) ;PRINT MINUS SIGN.
LAC 1,2
L2: IDIVI 1,12↔PUSH P,2 ;MODULO TEN AND SAVE.
SKIPE 1↔PUSHJ P,L2 ;TEST FOR DONE.
POP P,1↔ADDI 1,60↔CALL(DTYO,1) ;RESTORE & PRINT.
POP0J
SUBREND DECDPY;17-DEC-73(BGB)
;____________________________________________________________________
NSUBR FLODPY,FLONUM,PLACES ;FLOATING NUMBER DISPLAY. *
LAC FLONUM
JUMPL[CALL(DTYO,["-"])↔LACM FLONUM↔GO .+1]
LACM 2,PLACES↔CAILE 2,6↔LACI 2,6↔DAC 2,PLACES
FMPR[1.↔10.↔100.↔1000.↔10000.↔100000.↔1000000.](2)↔FIXX
IDIV[=1↔=10↔=100↔=1000↔=10000↔=100000↔=1000000](2)
PUSHP 1↔CALL(DECDPY,0)↔POPP 0
LAC 2,PLACES
ADD[=1↔=10↔=100↔=1000↔=10000↔=100000↔=1000000](2)
PUSHP DPYPTR↔CALL(DECDPY,0)↔POPP 1
LACI "."↔IDPB 0,1
POP2J
SUBREND FLODPY;17-DEC-73(BGB)
NSUBR IIIDPY,WINDOW,GLASS ;Display device routine. *
E←←16
T←←15
;DISPLAY WINDOW FRAME.
LAC 1,WINDOW
NIP 1(1)↔DAC XL ;PICK UP 2D CLIPPER WINDOW
NAP 1(1)↔DAC XH
NIP 2(1)↔DAC YL
NAP 2(1)↔DAC YH
CALL(DPYSET,DPYBUF) ;NEW POG
CALL(AIVECT,XL,YL) ;MAKE A BOARDER
CALL(AVECT,XH,YL)
CALL(AVECT,XH,YH)
CALL(AVECT,XL,YH)
CALL(AVECT,XL,YL)
;DISPLAY THE VISIBLE EDGE LIST.
LAC E,WINDOW
ALT2 E,E ;GET THE WORLD.
JUMPE E,L3 ;NOTHING THERE, RETURN
PED E,E↔SKIPA ;FIRST EDGE OF WORLD.
L1: ALT2 E,E↔JUMPE E,L3 ;GET AN EDGE.
X1DC 1,E↔Y1DC 2,E
CALL(AIVECT,1,2)
X2DC 1,E↔Y2DC 2,E
CALL(AVECT,1,2)
PVT 1,E
CALL DPYTXT
L2: NVT 1,E
CALL DPYTXT
GO L1
L3: CALL(DPYOUT,GLASS)
POP2J
DPYTXT: TESTZ 1,NSEW+TBIT1 ;IF INVISIBLE, THEN SKIP THIS ONE
POP0J
PTEXT T,1 ;GET TJOINT OR TEXT OF VERTEX
JUMPE T,[POP0J] ;NOTHING THERE
TESTZ T,VBIT↔POP0J ;IF IT'S A TJOINT, LEAVE
MARK 1,TBIT1
XDC 0,1↔FIXX 0, ;FETCH CO-ORDINATES
DAC 0,TX
YDC 0,1↔FIXX 0,
DAC 0,TY
CALL(DPYBRT,[2])
CALL(DPYBIG,[1])
DPYTX2: CAMGE 0,YH ;MAKE SURE IT'S WITHIN WINDOW
CAMGE 0,YL
GO DPYTX3
CALL AIVECT,TX,TY ;POSITION IT
DPYTX4: MOVEI 0,1(T)
CALL DPYSTR,0 ;DISPLAY IT (THIS MAY OVERFLOW EAST)
TESTZ T,CONBIT ;IS IT CONTINUED?
GO [ TCCW T,T ;YES, GET NEXT LINE
JUMPN T,DPYTX4 ;MAKE SURE THERE'S SOMETHING THERE
FATAL<Missing continuation of text node.> ]
DPYTX3: TCCW T,T ;GET NEXT TEXT NODE
JUMPE T,[POPJ P,] ;END OF LINE
HRREI 0,-20 ;THIS REALLY SHOULD BE SIZE DEPENDENT
ADDB 0,TY ;INCREMENT
GO DPYTX2
DECLARE{XL,XH,YL,YH,TX,TY}
BEND IIIDPY; BGB 5 FEB 1973 --------------------------------------
NSUBR VDPY,VERTEX ;SPECIAL VERTEX DISPLAY *
LAC 1,VERTEX
; CAR 0,(1)↔ANDI 0,017400 ;NSEW & PZZ.
; SKIPE↔POP1J
TESTZ 1,NSEW!PZZ↔POP1J
XDC 0,1↔FIXX↔SUBI VERNX↔PUSH P,0
YDC 0,1↔FIXX↔SUBI VERNY↔PUSH P,0↔PUSHJ P,AIVECT
CALL(DPYBIG,[1])↔CALL(DPYBRT,[3])
CALL(IDPY,VERTEX)
CALL(DPYBIG,[2])↔CALL(DPYBRT,[2])
POP1J
SUBREND VDPY;9-JAN-73(BGB)9-FEB-73(BGB)
NSUBR EDPY,EDGE ;SPECIAL EDGE DISPLAY *
CALL(DPYBIG,[1])↔CALL(DPYBRT,[3])
LAC 2,EDGE
PVT 1,2
; CAR 0,(1)↔ANDI 0,017400 ;NSEW &PZZ
; JUMPN 0,L1
TESTZ 1,NSEW!PZZ↔GO L1
XDC 0,1↔FIXX↔DAC X
YDC 0,1↔FIXX↔DAC Y
CALL AIVECT,X,Y
CALL (DTYO,["+"])
CALL AIVECT,X,Y
L1: LAC 2,EDGE
NVT 1,2
; CAR 0,(1)↔ANDI 0,017400
; JUMPN 0,L2
TESTZ 1,NSEW!PZZ↔GO L2
XDC 0,1↔FIXX↔ADDM X↔PUSH P,0
YDC 0,1↔FIXX↔ADDM Y↔PUSH P,0
CALL AVECT
CALL (DTYO,["-"])
L2: LAC 2,EDGE
LAC X↔ASH -1↔PUSH P,0
LAC Y↔ASH -1↔PUSH P,0
CALL AIVECT
CALL IDPY,EDGE
CALL (DPYBIG,[2])
CALL (DPYBRT,[2])
POP1J
DECLARE{X,Y}
SUBREND EDPY;9-FEB-73(BGB),9-FEB-73(BGB)
NSUBR FDPY,FACE ;Special Face display *
EXTERN ECCW
LAC 1,FACE↔DAC 1,F
TEST 1,FBIT↔POP1J
PED 2,1↔DAC 2,E↔DAC 2,E0
SETZM I
CALL(DPYBIG,[1])
CALL(DPYBRT,[3])
SKIPN E↔GO[LAC 1,F↔PFACE 1,1↔PVT 1,1↔GO VDPY+1]
L1: AOS I↔LAC 2,E↔TEST 2,VISIBLE↔GO L2
X1DC 0,2↔DAC 0,X
Y1DC 1,2↔DAC 1,Y
CALL(AIVECT,0,1)↔LAC 2,E
X2DC 0,2↔ADDM 0,X
Y2DC 1,2↔ADDM 1,Y
CALL(AVECT,0,1)
LAC 0,X↔ASH 0,-1↔SUBI 0,VERNX
LAC 1,Y↔ASH 1,-1↔SUBI 1,VERNY
CALL(AIVECT,0,1)
CALL(DECDPY,I)
L2: CALL(ECCW,E,F)
CAMN 1,E↔GO L3↔DAC 1,E
CAME 1,E0↔GO L1
L3: CALL(DPYBRT,[2])
CALL(DPYBIG,[2])
POP1J
DECLARE{F,E,E0,X,Y,I}
SUBREND FDPY;9-FEB-73(BGB)
NSUBR IDPY,NODE ;Identifier display. *
EXTERN CAMERA
EXTERN NTYPE
EXTERN NNAMES
CALL(NTYPE,NODE)↔CAIGE 1,$BODY↔GO L5
LAC 1,NODE↔SETZ 2,
TESTZ 1,BBIT↔GO[
SKIPE 13,-2(1)↔GO[
LAC 14,-1(1)↔DZM 15
CALL(DPYSTR,[13])↔POP1J]
L1: CW 1,1↔TESTZ 1,BBIT↔AOJA 2,L1
AOS 2↔PUSH P,2↔CALL(DTYO,["B"])
CALL(DECDPY)↔POP1J]
TESTZ 1,FBIT↔GO[
L2: NFACE 1,1↔TESTZ 1,FBIT↔AOJA 2,L2
AOS 2↔PUSH P,2↔CALL(DTYO,["F"])
CALL(DECDPY)↔POP1J]
TESTZ 1,EBIT↔GO[
L3: NED 1,1↔TESTZ 1,EBIT↔AOJA 2,L3
AOS 2↔PUSH P,2↔CALL(DTYO,["E"])
CALL(DECDPY)↔POP1J]
TESTZ 1,VBIT↔GO[
L4: NVT 1,1↔TESTZ 1,VBIT↔AOJA 2,L4
AOS 2↔PUSH P,2↔CALL(DTYO,["V"])
CALL(DECDPY)↔POP1J]
L5: CALL DPYSTR,NNAMES(1)
LAC 1,NODE↔CAMN 1,UNIVERSE↔POP1J
$TYPE 2,1↔DZM 5 ;NODE - TYPE - COUNT.
LAC 3,UNIVERSE↔SON 3,3↔DAC 3,4 ;SON0 - SON.
CAME 1,4↔GO[$TYPE 0,4↔CAMN 0,2↔AOS 5↔SIS 4,4
CAME 3,4↔GO .-1↔GO .+1]↔AOS 5
CALL(DECDPY,5)
POP1J
BEND IDPY; BGB 4 FEBRUARY 1973 -----------------------------------
END