mirror of
https://github.com/sehugg/8bitworkshop.git
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52 lines
832 B
C
52 lines
832 B
C
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#include "vcslib.h"
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#pragma warn (const-comparison, off)
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void kernel_1(void) {
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// Vertical Sync signal
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TIA.vsync = START_VERT_SYNC;
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TIA.wsync = 0x00;
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// Test reset switch
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if (SW_RESET()) {
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asm("brk");
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}
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TIA.wsync = 0x00;
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TIA.wsync = 0x00;
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TIA.vsync = STOP_VERT_SYNC;
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// Vertical Blank (preframe)
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RIOT.tim64t = VBLANK_TIM64;
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}
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void kernel_2(void) {
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while (RIOT.intim != 0) {}
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// Turn on beam
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TIA.wsync = 0x00;
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TIA.vblank = ENABLE_TIA;
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// Display frame (doframe)
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#ifdef PAL
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RIOT.t1024t = KERNAL_T1024;
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#else
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RIOT.tim64t = KERNAL_TIM64;
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#endif
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}
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void kernel_3(void) {
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while (RIOT.intim != 0) {}
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// Turn off beam
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TIA.wsync = 0x00;
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TIA.vblank = DISABLE_TIA;
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// Overscan (postframe)
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RIOT.tim64t = OVERSCAN_TIM64;
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}
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void kernel_4(void) {
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while (RIOT.intim != 0) {}
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}
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