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Issue # 11 DTACK GROUNDED Newsletter - July 1982

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@eZine
Published in 
DTACK GROUNDED Newsletter
 · 6 May 2023
... antime, enter that code as DC.W $7080. This is easy enough to assemble in your head: the first hex digit is always 7. The second hex digit is twice the register number. The final two hex digits represent the data to be moved into the register. MOVEQ #192,D5? That's DC.W $7AC0. Simple, yes? Now about those 'features': The 68000 has an ADD instruction which either adds an effective address ({ea}) to a data register or else adds a data register to an {ea}. In both cases, all of the sensible ...

Issue # 7 DTACK GROUNDED Newsletter - February and March 1982

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@eZine
Published in 
DTACK GROUNDED Newsletter
 · 6 May 2023
Issue # 7 DTACK GROUNDED Newsletter - February and March 1982
... byte and to thoroughly mix up the starting address of each line. Code Listing 1 OPT P=68000,BRS,FRS 001000 2 ORG $001000 3 4 * -- TEST X AND Y FOR LIMITS -- 5 001000 0C40 0118 6 PLOT CMPI.W #280,D0 001004 64 34 7 BCC SIGOFF 001006 0C41 00C0 8 CMPI.W #192,D1 00100A 64 2E 9 BCC SIGOFF 10 11 * -- LIMITS OK; SET UP THE TABLE POINTERS -- 12 00100C 4CB8 7E00 133A 13 MOVEM.W TABLES,A1-A6 14 * SET POINTERS A1 THRU A6 15 16 * -- NEXT FETCH THE PIXEL TO D7 -- 17 001012 1E35 0000 18 MOVE.B (A5,D0.W),D7 19 20 * ...

GEnieLamp Apple II - Vol.5, Issue 47

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@eZine
Published in 
GEnieLamp Apple II
 · 24 Jul 2021
... like a shadow in front, created from a light source behind and to the left. Best at large sizes. Released as freeware by David Rakowski. This version is Type-1 for use with PostScript. The TrueType version is available on NAUG disk Pointless.19 (A2 #19212). File #25993: INKWELL.T1.BXY (32200 bytes) '''''''''''''''''''''''''''''''''''''''''' Inkwell is a bold, weighted, display typeface. Upper case, lower case, numerals, and punctuation as well as special letters for Scandinavians. Shareware from Sa ...

Xope for Atari

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@atari
Published in 
atari
 · 5 Dec 2020
... creen 320*200*4 *** clear_screen: ifeq dator move.l screen,a0 move.w #7999,d0 .loop: clr.l (a0)+ dbra d0,.loop endc ifeq dator-1 move.w #2,$ffff8a2e.w move.w #16000,$ffff8a36.w clr.b $ffff8a3b.w move.l screen,$ffff8a32.w move.w #1,$ffff8a38.w move.b #192,$ffff8a3c.w endc rts *** Data section *** pack: dc.b $80,$1,$12,$1a variabler: dc.l 0 hoppa: dc.l 0 hoppa3: dc.l 0 hoppa4: dc.l 0 parameters: dc.w 0 dc.l buffert dc.l screen dc.w 0,0,-1000 dc.w 319,199,1000 polygon_mupp: incbin "a:\bin\xope2_01.img" ...

Atari STE Blitter Chip example program

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@atari
Published in 
atari
 · 30 Nov 2020
Atari STE Blitter Chip example program
... ndmsk3(a2) Right end mask move.b d2,skew(a2) skew value move.b #1,op(a2) AND mode for mask move.l #3,d0 mask all 4 planes destination .mask move.l a0,srcaddr(a2) source address move.l a1,dstaddr(a2) dest address move.w #32,ycount(a2) 32 lines move.b #192,linenum(a2) start blit (HOG mode) addq #2,a1 nest destination plane dbra d0,.mask loop move.b #7,op(a2) OR mode for sprite data move.l #2,d0 over last 3 planes addq #2,a0 skip mask plane subq #6,a1 second dest plane .blit move.l a0,srcaddr(a2) sourc ...

Hackers Issue 07

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@eZine
Published in 
Hackers
 · 2 Jul 2020
... 0185 #185 Tx 875.58 Rx 830.58 Chan 0186 #186 Tx 875.61 Rx 830.61 Chan 0187 #187 Tx 875.64 Rx 830.64 Chan 0188 #188 Tx 875.67 Rx 830.67 Chan 0189 #189 Tx 875.70 Rx 830.70 Chan 0190 #190 Tx 875.73 Rx 830.73 Chan 0191 #191 Tx 875.76 Rx 830.76 Chan 0192 #192 Tx 875.79 Rx 830.79 Chan 0193 #193 Tx 875.82 Rx 830.82 Chan 0194 #194 Tx 875.85 Rx 830.85 Chan 0195 #195 Tx 875.88 Rx 830.88 Chan 0196 #196 Tx 875.91 Rx 830.91 Chan 0197 #197 Tx 875.94 Rx 830.94 Chan 0198 #198 Tx 875.97 Rx 830.97 Chan 0199 #199 Tx 8 ...

Commodore Hacking Issue 21

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@eZine
Published in 
Commodore Hacking
 · 21 Jun 2019
... pdur = $bc arpoff = $bd noteptr = $fa temp = $fa freqtab = $c000 * * Code begins here * start *------------------------------- do 0 jmp InitFreq jmp Play jmp Reset fin *------------------------------- * * InitFreq -- set up note table * InitFreq ldy #192 :l2 ldx #24 :loop lda freq-1,x sta freqtab-1,y dex dey lda freq-1,x sta freqtab-1,y lsr freq,x ror freq-1,x dey beq :xit dex bne :loop beq :l2 :xit rts * * Play routine * tune in .A * Reset ; Force a tune reset sec ror curtune ; ldx #255 ; stx curtu ...
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