Zack Buhman
6640c37a1d
- add code loading for m68k
- incomplete scsp experiments
- the register definitions should be fairly complete,
though I did not produce actual sound yet
- fix type.h definitions
- incomplete cdblock register definitions
83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
//
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// vdp1:
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//
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// The VBE setting must be set immediately after the V-blank IN interrupt.
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//
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// TVM settings must be performed from the second H-blank IN interrupt after
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// the V-blank IN interrupt to the H-blank IN interrupt immediately after the
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// V-blank OUT interrupt.
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vdp1.reg.TVMR = ( TVMR__TVM__NTSC_PAL
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| TVMR__TVM__FRAMEBUFFER_NONROTATION
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| TVMR__TVM__16BPP
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);
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// make FCM and FCT settings immediately after V-blank OUT
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vdp1.reg.FBCR = 0;
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// "A command table must always be stored at address 00000H to 0001EH."
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// we can't trigger a plot yet because we have no (valid) table.
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//vdp1.reg.PTMR = PTMR__PTM__FRAME_CHANGE;
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vdp1.reg.EWDR = 0; // black
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// upper-left
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vdp1.reg.EWLR = PTMR__EWLR__16BPP_X1(0) | PTMR__EWLR__Y1(0);
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// lower-right
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vdp1.reg.EWRR = PTMR__EWRR__16BPP_X3(319) | PTMR__EWRR__Y3(239);
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vdp1.vram.cmd[0].CTRL = CTRL__JP__JUMP_NEXT | CTRL__COMM__USER_CLIP_COORDINATES;
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vdp1.vram.cmd[0].LINK = 0;
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vdp1.vram.cmd[0].XA = 0;
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vdp1.vram.cmd[0].YA = 0;
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vdp1.vram.cmd[0].XC = 319;
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vdp1.vram.cmd[0].YC = 239;
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vdp1.vram.cmd[1].CTRL = CTRL__JP__JUMP_NEXT | CTRL__COMM__SYSTEM_CLIP_COORDINATES;
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vdp1.vram.cmd[1].LINK = 0;
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vdp1.vram.cmd[1].XC = 319;
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vdp1.vram.cmd[1].YC = 239;
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vdp1.vram.cmd[2].CTRL = CTRL__JP__JUMP_NEXT | CTRL__COMM__LOCAL_COORDINATE;
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vdp1.vram.cmd[2].LINK = 0;
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vdp1.vram.cmd[2].XA = 0;
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vdp1.vram.cmd[2].YA = 0;
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vdp1.vram.cmd[3].CTRL = CTRL__JP__JUMP_NEXT | CTRL__COMM__POLYGON;
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vdp1.vram.cmd[3].LINK = 0;
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vdp1.vram.cmd[3].PMOD = CTRL__PMOD__ECD | CTRL__PMOD__SPD;
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vdp1.vram.cmd[3].COLR = 0x2; // palette color #2
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vdp1.vram.cmd[3].XA = 50;
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vdp1.vram.cmd[3].YA = 50;
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vdp1.vram.cmd[3].XB = 150;
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vdp1.vram.cmd[3].YB = 50;
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vdp1.vram.cmd[3].XC = 150;
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vdp1.vram.cmd[3].YC = 150;
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vdp1.vram.cmd[3].XD = 50;
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vdp1.vram.cmd[3].YD = 150;
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vdp1.vram.cmd[4].CTRL = CTRL__JP__JUMP_NEXT | CTRL__COMM__POLYGON;
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vdp1.vram.cmd[4].LINK = 0;
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vdp1.vram.cmd[4].PMOD = CTRL__PMOD__ECD | CTRL__PMOD__SPD;
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vdp1.vram.cmd[4].COLR = (1 << 15) | (0x31 << 10) | (0x31 << 0); // RGB15 magenta
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vdp1.vram.cmd[4].XA = 100;
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vdp1.vram.cmd[4].YA = 50;
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vdp1.vram.cmd[4].XB = 150;
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vdp1.vram.cmd[4].YB = 100;
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vdp1.vram.cmd[4].XC = 100;
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vdp1.vram.cmd[4].YC = 150;
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vdp1.vram.cmd[4].XD = 50;
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vdp1.vram.cmd[4].YD = 100;
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vdp1.vram.cmd[5].CTRL = CTRL__END;
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// priorities
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vdp2.reg.PRISA = 0x0101;
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vdp2.reg.PRISB = 0x0101;
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vdp2.reg.PRISC = 0x0101;
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vdp2.reg.PRISD = 0x0101;
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// start drawing
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vdp1.reg.PTMR = PTMR__PTM__FRAME_CHANGE;
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