mirror of
https://github.com/sehugg/8bitworkshop.git
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c64: update presets, refactor analysis
This commit is contained in:
Steven Hugg
parent
de6250b0cd
commit
f6452a719f
@ -24,6 +24,37 @@ typedef enum { false, true } bool; // boolean
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///// MACROS /////
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// VIC Control Register 1 Flags
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#define VIC_CTRL1_RST8 0x80 // Bit 8 of RASTER (read) or raster line interrupt set (write)
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#define VIC_CTRL1_ECM 0x40 // Extended Color Mode
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#define VIC_CTRL1_BMM 0x20 // Bitmap Mode
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#define VIC_CTRL1_DEN 0x10 // Display Enable
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#define VIC_CTRL1_RSEL 0x08 // Row Select (25 or 24 rows)
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#define VIC_CTRL1_YSCROLL_MASK 0x07 // Vertical Fine Scrolling
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// VIC Control Register 2 Flags
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#define VIC_CTRL2_RES 0x20 // Chip reset
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#define VIC_CTRL2_MCM 0x10 // Multicolor Mode Enable
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#define VIC_CTRL2_CSEL 0x08 // Column Select (40 or 38 columns)
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#define VIC_CTRL2_XSCROLL_MASK 0x07 // Horizontal Fine Scrolling
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// VIC Memory Control Register Flags
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#define VIC_ADDR_VM_MASK 0xf0 // Video Matrix Base Address Mask (character data)
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#define VIC_ADDR_CB_MASK 0x0e // Character Bank Base Address Mask (screen memory)
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// VIC Interrupt Register Flags
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#define VIC_IRR_IRQ 0x80 // Interrupt Request
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#define VIC_IRR_ILP 0x08 // Light Pen Interrupt
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#define VIC_IRR_IMMC 0x04 // Sprite-Sprite Collision Interrupt
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#define VIC_IRR_IMBC 0x02 // Sprite-Background Collision Interrupt
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#define VIC_IRR_IRST 0x01 // Raster Line Interrupt
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// VIC Interrupt Mask Register Flags
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#define VIC_IMR_ELP 0x08 // Enable Light Pen Interrupt
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#define VIC_IMR_EMMC 0x04 // Enable Sprite-Sprite Collision Interrupt
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#define VIC_IMR_EMBC 0x02 // Enable Sprite-Background Collision Interrupt
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#define VIC_IMR_ERST 0x01 // Enable Raster Interrupt
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// lookup screen address macro
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#define SCRNADR(base,col,row) ((base)+(col)+(row)*40)
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@ -77,6 +108,16 @@ char* get_vic_bank_start();
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// get current screen memory address
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char* get_screen_memory();
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// read joystick fast
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#define READ_STICK(index) ~PEEK(0xdc01-(index))
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#define STICK_UP(joy) ((joy & 0x1) != 0)
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#define STICK_DOWN(joy) ((joy & 0x2) != 0)
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#define STICK_LEFT(joy) ((joy & 0x4) != 0)
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#define STICK_RIGHT(joy) ((joy & 0x8) != 0)
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#define STICK_BUTTON(joy) ((joy & 0x10) != 0)
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#define STICK_MOVED(joy) ((joy & 0x1f) != 0)
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#ifdef __CC65__
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// return key in buffer, or 0 if none (BIOS call)
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char __fastcall__ poll_keyboard();
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300
presets/c64/plasma.c
Normal file
300
presets/c64/plasma.c
Normal file
@ -0,0 +1,300 @@
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/*****************************************************************************\
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** plasma test program for cc65. **
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** **
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** (w)2001 by groepaz **
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** **
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** Cleanup and porting by Ullrich von Bassewitz. **
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** **
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\*****************************************************************************/
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#include <stdlib.h>
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#include <time.h>
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#include <conio.h>
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#include <cc65.h>
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#if defined(__C64__) || defined(__C128__)
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# define SCREEN1 0xE000
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# define SCREEN2 0xE400
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# define CHARSET 0xE800
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# define outb(addr,val) (*(addr)) = (val)
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# define inb(addr) (*(addr))
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#elif defined(__CBM510__)
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# define SCREEN1 0xF000
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# define SCREEN2 0xF400
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# define CHARSET 0xE000
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# define outb(addr,val) pokebsys ((unsigned)(addr), val)
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# define inb(addr) peekbsys ((unsigned)(addr))
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#elif defined(__PLUS4__)
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# define SCREEN1 0x6400
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# define SCREEN2 0x6C00
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# define CHARSET 0x7000
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# define outb(addr,val) (*(addr)) = (val)
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# define inb(addr) (*(addr))
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#endif
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/* Values for the VIC address register to switch between the two pages */
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#if defined(__PLUS4__)
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#define PAGE1 ((SCREEN1 >> 8) & 0xF8)
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#define PAGE2 ((SCREEN2 >> 8) & 0xF8)
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#define CHARADR ((CHARSET >> 8) & 0xFC)
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#else
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#define PAGE1 ((SCREEN1 >> 6) & 0xF0) | ((CHARSET >> 10) & 0x0E)
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#define PAGE2 ((SCREEN2 >> 6) & 0xF0) | ((CHARSET >> 10) & 0x0E)
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#endif
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/* Use static local variables for speed */
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#pragma static-locals (1);
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static const unsigned char sinustable[0x100] = {
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0x80, 0x7d, 0x7a, 0x77, 0x74, 0x70, 0x6d, 0x6a,
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0x67, 0x64, 0x61, 0x5e, 0x5b, 0x58, 0x55, 0x52,
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0x4f, 0x4d, 0x4a, 0x47, 0x44, 0x41, 0x3f, 0x3c,
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0x39, 0x37, 0x34, 0x32, 0x2f, 0x2d, 0x2b, 0x28,
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0x26, 0x24, 0x22, 0x20, 0x1e, 0x1c, 0x1a, 0x18,
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0x16, 0x15, 0x13, 0x11, 0x10, 0x0f, 0x0d, 0x0c,
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0x0b, 0x0a, 0x08, 0x07, 0x06, 0x06, 0x05, 0x04,
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0x03, 0x03, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01,
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0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x03,
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0x03, 0x04, 0x05, 0x06, 0x06, 0x07, 0x08, 0x0a,
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0x0b, 0x0c, 0x0d, 0x0f, 0x10, 0x11, 0x13, 0x15,
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0x16, 0x18, 0x1a, 0x1c, 0x1e, 0x20, 0x22, 0x24,
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0x26, 0x28, 0x2b, 0x2d, 0x2f, 0x32, 0x34, 0x37,
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0x39, 0x3c, 0x3f, 0x41, 0x44, 0x47, 0x4a, 0x4d,
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0x4f, 0x52, 0x55, 0x58, 0x5b, 0x5e, 0x61, 0x64,
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0x67, 0x6a, 0x6d, 0x70, 0x74, 0x77, 0x7a, 0x7d,
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0x80, 0x83, 0x86, 0x89, 0x8c, 0x90, 0x93, 0x96,
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0x99, 0x9c, 0x9f, 0xa2, 0xa5, 0xa8, 0xab, 0xae,
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0xb1, 0xb3, 0xb6, 0xb9, 0xbc, 0xbf, 0xc1, 0xc4,
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0xc7, 0xc9, 0xcc, 0xce, 0xd1, 0xd3, 0xd5, 0xd8,
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0xda, 0xdc, 0xde, 0xe0, 0xe2, 0xe4, 0xe6, 0xe8,
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0xea, 0xeb, 0xed, 0xef, 0xf0, 0xf1, 0xf3, 0xf4,
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0xf5, 0xf6, 0xf8, 0xf9, 0xfa, 0xfa, 0xfb, 0xfc,
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0xfd, 0xfd, 0xfe, 0xfe, 0xfe, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfe, 0xfd,
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0xfd, 0xfc, 0xfb, 0xfa, 0xfa, 0xf9, 0xf8, 0xf6,
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0xf5, 0xf4, 0xf3, 0xf1, 0xf0, 0xef, 0xed, 0xeb,
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0xea, 0xe8, 0xe6, 0xe4, 0xe2, 0xe0, 0xde, 0xdc,
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0xda, 0xd8, 0xd5, 0xd3, 0xd1, 0xce, 0xcc, 0xc9,
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0xc7, 0xc4, 0xc1, 0xbf, 0xbc, 0xb9, 0xb6, 0xb3,
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0xb1, 0xae, 0xab, 0xa8, 0xa5, 0xa2, 0x9f, 0x9c,
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0x99, 0x96, 0x93, 0x90, 0x8c, 0x89, 0x86, 0x83
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};
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static void doplasma (register unsigned char* scrn)
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{
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unsigned char xbuf[40];
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unsigned char ybuf[25];
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unsigned char c1a,c1b;
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unsigned char c2a,c2b;
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unsigned char c1A,c1B;
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unsigned char c2A,c2B;
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register unsigned char i, ii;
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c1a = c1A;
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c1b = c1B;
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for (ii = 0; ii < 25; ++ii) {
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ybuf[ii] = (sinustable[c1a] + sinustable[c1b]);
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c1a += 4;
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c1b += 9;
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}
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c1A += 3;
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c1B -= 5;
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c2a = c2A;
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c2b = c2B;
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for (i = 0; i < 40; ++i) {
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xbuf[i] = (sinustable[c2a] + sinustable[c2b]);
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c2a += 3;
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c2b += 7;
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}
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c2A += 2;
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c2B -= 3;
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for (ii = 0; ii < 25; ++ii) {
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/* Unrolling the following loop will give a speed increase of
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** nearly 100% (~24fps), but it will also increase the code
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** size a lot.
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*/
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for (i = 0; i < 40; ++i, ++scrn) {
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*scrn = (xbuf[i] + ybuf[ii]);
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}
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}
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}
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static void makechar (void)
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{
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static const unsigned char bittab[8] = {
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0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80
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};
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unsigned char i, ii, b, s;
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unsigned c;
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gotoxy (0, 1);
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for (c = 0; c < 0x100; ++c) {
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s = sinustable[c];
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for (i = 0; i < 8; ++i){
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b = 0;
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for (ii = 0; ii < 8; ++ii) {
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if ((rand() & 0xFFu) > s) {
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b |= bittab[ii];
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}
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}
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((unsigned char*)CHARSET) [(c*8) + i] = b;
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}
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if ((c & 0x07) == 0) {
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cputc ('.');
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}
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}
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}
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int main (void)
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{
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unsigned char border;
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unsigned char background;
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unsigned char text;
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unsigned char v;
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clock_t t;
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unsigned long f = 0;
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unsigned long sec;
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unsigned sec10;
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unsigned long fps;
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unsigned fps10;
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#if defined(__C64__)
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unsigned char block;
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#endif
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#if defined(__C128__)
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unsigned char block;
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unsigned char initflag;
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unsigned char graphflag;
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#endif
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#if defined(__PLUS4__)
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unsigned int i;
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unsigned char v2;
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#endif
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clrscr ();
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cprintf ("Making charset, mompls");
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makechar();
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/* Set the border and background colors */
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border = bordercolor (COLOR_BLUE);
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background = bgcolor (COLOR_BLUE);
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text = textcolor (COLOR_BLACK);
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clrscr ();
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#if defined(__C64__) || defined(__C128__)
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/* Move the VIC 16K block */
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block = inb (&CIA2.pra);
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outb (&CIA2.pra, (block & 0xFC) | ((SCREEN1 >> 14) ^ 0x03));
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#endif
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#if defined(__C128__)
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/* Save and change some flags, so that kernal/basic interrupt handler will
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** not interfere with our routine.
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*/
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initflag = *(unsigned char*) 0xA04;
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*(unsigned char*) 0xA04 &= 0xFE;
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graphflag = *(unsigned char*) 0xD8;
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*(unsigned char*) 0xD8 = 0xFF;
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#endif
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/* Remember the VIC address register */
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#if defined(__PLUS4__)
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v = inb (&TED.char_addr);
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v2 = inb (&TED.video_addr);
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#else
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v = inb (&VIC.addr);
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#endif
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#if defined(__PLUS4__)
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for (i=0;i<1000;i++) {
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((unsigned char *) (SCREEN1-0x0400))[i] = 0;
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((unsigned char *) (SCREEN2-0x0400))[i] = 0;
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}
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outb (&TED.char_addr, CHARADR);
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#endif
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/* Run the demo until a key was hit */
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t = clock ();
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while (!kbhit()) {
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/* Build page 1, then make it visible */
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doplasma ((unsigned char*)SCREEN1);
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#if defined(__PLUS4__)
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outb (&TED.video_addr, PAGE1);
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#else
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outb (&VIC.addr, PAGE1);
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#endif
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/* Build page 2, then make it visible */
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doplasma ((unsigned char*)SCREEN2);
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#if defined(__PLUS4__)
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outb (&TED.video_addr, PAGE2);
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#else
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outb (&VIC.addr, PAGE2);
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#endif
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/* Count frames */
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f += 2;
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}
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t = clock() - t;
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/* Switch back the VIC screen */
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#if defined(__PLUS4__)
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outb (&TED.video_addr, v2);
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outb (&TED.char_addr, v);
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#else
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outb (&VIC.addr, v);
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#endif
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#if defined(__C64__) || defined(__C128__)
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/* Move back the VIC 16K block */
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outb (&CIA2.pra, block);
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#endif
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#if defined(__C128__)
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/* Restore the flags */
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*(unsigned char*) 0xA04 = initflag;
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*(unsigned char*) 0xD8 = graphflag;
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#endif
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/* Fetch the character from the keyboard buffer and discard it */
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(void) cgetc();
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/* Reset screen colors */
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bordercolor (border);
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bgcolor (background);
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textcolor (text);
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clrscr ();
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/* Calculate stats */
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sec = (t * 10) / CLK_TCK;
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sec10 = sec % 10;
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sec /= 10;
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fps = (f * (CLK_TCK * 10)) / t;
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fps10 = fps % 10;
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fps /= 10;
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/* Output stats */
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gotoxy (0, 0); cprintf ("time : %lu.%us", sec, sec10);
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gotoxy (0, 1); cprintf ("frames: %lu", f);
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gotoxy (0, 2); cprintf ("fps : %lu.%u", fps, fps10);
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if (doesclrscrafterexit ()) {
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cputsxy (0, 4, "Press any key when done...");
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(void) cgetc ();
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}
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/* Done */
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return EXIT_SUCCESS;
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}
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@ -1,4 +1,5 @@
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; use CC65's interrupter (slower)
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USE_INTERRUPTOR = 0
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.segment "DATA"
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@ -9,39 +10,41 @@ NextDlist: .word NullDlist-1
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.segment "CODE"
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.global ___dlist_setup
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.global ___dlist_done
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.global DLIST_IRQ_NEXT
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.global DLIST_IRQ_RESTART
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.if USE_INTERRUPTOR
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.interruptor DLIST_IRQ
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.endif
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___dlist_setup:
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SEI ; set interrupt bit, make the CPU ignore interrupt requests
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sei ; set interrupt bit, make the CPU ignore interrupt requests
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sta StartDlist+0 ; save XA as pointer to start of dlist
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stx StartDlist+1
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LDA #%01111111 ; switch off interrupt signals from CIA-1
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STA $DC0D
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lda #%01111111 ; switch off interrupt signals from CIA-1
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sta $DC0D
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AND $D011 ; clear most significant bit of VIC's raster register
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STA $D011
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and $D011 ; clear most significant bit of VIC's raster register
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sta $D011
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LDA $DC0D ; acknowledge pending interrupts from CIA-1
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LDA $DD0D ; acknowledge pending interrupts from CIA-2
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lda $DC0D ; acknowledge pending interrupts from CIA-1
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lda $DD0D ; acknowledge pending interrupts from CIA-2
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LDA #252 ; set rasterline where interrupt shall occur
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STA $D012
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lda #252 ; set rasterline where interrupt shall occur
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sta $D012
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.if !USE_INTERRUPTOR
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LDA #<DLIST_IRQ ; set interrupt vectors, pointing to interrupt service routine below
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STA $0314
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LDA #>DLIST_IRQ
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STA $0315
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lda #<DLIST_IRQ ; set interrupt vectors, pointing to interrupt service routine below
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sta $0314
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lda #>DLIST_IRQ
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sta $0315
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.endif
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LDA #%00000001 ; enable raster interrupt signals from VIC
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STA $D01A
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lda #%00000001 ; enable raster interrupt signals from VIC
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sta $D01A
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cli
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rts
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@ -54,26 +57,21 @@ DLIST_CALL:
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rts
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DLIST_IRQ_RESTART:
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sta $d012
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sta $D012 ; set IRQ raster line
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lda StartDlist+0
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sta NextDlist+0
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lda StartDlist+1
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sta NextDlist+1
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bne DLIST_ACK
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DLIST_IRQ_STOP:
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lda #0 ; disable raster interrupt signals from VIC
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sta $D01A
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bne DLIST_ACK
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|
||||
DLIST_IRQ_NEXT:
|
||||
sta $d012
|
||||
sta $D012
|
||||
pla
|
||||
sta NextDlist+0
|
||||
pla
|
||||
sta NextDlist+1
|
||||
DLIST_ACK:
|
||||
ASL $D019 ; acknowledge the interrupt by clearing the VIC's interrupt flag
|
||||
asl $D019 ; acknowledge the interrupt by clearing the VIC's interrupt flag
|
||||
.if USE_INTERRUPTOR
|
||||
clc
|
||||
rts
|
||||
@ -84,9 +82,30 @@ DLIST_ACK:
|
||||
tax
|
||||
pla
|
||||
rti ; return from interrupt
|
||||
; JMP $EA31 ; jump into KERNAL's standard interrupt service routine to handle keyboard scan, cursor display etc.
|
||||
.endif
|
||||
|
||||
___dlist_done:
|
||||
php
|
||||
sei ; disable interrupts
|
||||
lda #$0 ; disable raster interrupt signals from VIC
|
||||
sta $D01A
|
||||
lda #$ff
|
||||
sta $DC0D
|
||||
.if !USE_INTERRUPTOR
|
||||
lda #$31 ; set interrupt vectors back to KERNAL
|
||||
sta $0314
|
||||
lda #$ea
|
||||
sta $0315
|
||||
.else
|
||||
lda #<(NullDlist-1)
|
||||
sta StartDlist
|
||||
lda #>(NullDlist-1)
|
||||
sta StartDlist+1
|
||||
.endif
|
||||
plp
|
||||
rts
|
||||
|
||||
|
||||
NullDlist:
|
||||
lda #252
|
||||
jmp DLIST_IRQ_RESTART
|
||||
|
||||
@ -4,6 +4,7 @@
|
||||
|
||||
// internal function, use macro instead
|
||||
void __dlist_setup(void* ptr);
|
||||
void __dlist_done();
|
||||
|
||||
// initialize display list with function 'func'
|
||||
#define DLIST_SETUP(func) \
|
||||
@ -19,5 +20,7 @@ void __dlist_setup(void* ptr);
|
||||
__A__ = line; \
|
||||
asm ("jmp DLIST_IRQ_RESTART");
|
||||
|
||||
// stop display list
|
||||
#define DLIST_DONE() __dlist_done();
|
||||
|
||||
#endif
|
||||
|
||||
179
presets/c64/scrollingmap1.c
Normal file
179
presets/c64/scrollingmap1.c
Normal file
@ -0,0 +1,179 @@
|
||||
|
||||
#include <stdio.h>
|
||||
#include <conio.h>
|
||||
#include <c64.h>
|
||||
#include <cbm_petscii_charmap.h>
|
||||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
#include <joystick.h>
|
||||
|
||||
//#resource "c64-sid.cfg"
|
||||
#define CFGFILE c64-sid.cfg
|
||||
|
||||
#include "common.h"
|
||||
//#link "common.c"
|
||||
|
||||
#include "scrolling.h"
|
||||
//#link "scrolling.c"
|
||||
|
||||
#include "sprites.h"
|
||||
//#link "sprites.c"
|
||||
|
||||
//#link "level1.ca65"
|
||||
|
||||
extern const byte charset_data[];
|
||||
extern const byte charset_attrib_data[];
|
||||
extern const byte chartileset_data[];
|
||||
extern const byte chartileset_tag_data[];
|
||||
extern const byte* map_row_pointers[];
|
||||
|
||||
#define MAP_COLS 28
|
||||
#define MAP_ROWS 11
|
||||
|
||||
static void draw_cell(word ofs, byte x, byte y) {
|
||||
sbyte xx = x + origin_x;
|
||||
sbyte yy = y + origin_y;
|
||||
sbyte col = xx >> 2;
|
||||
sbyte row = yy >> 2;
|
||||
byte xofs = xx & 3;
|
||||
byte yofs = yy & 3;
|
||||
char ch;
|
||||
char color;
|
||||
if (col < 0 || col >= MAP_COLS || row < 0 || row >= MAP_ROWS) {
|
||||
ch = 0;
|
||||
color = 0;
|
||||
} else {
|
||||
byte tileindex = map_row_pointers[row][col];
|
||||
ch = chartileset_data[xofs + yofs*4 + tileindex*16];
|
||||
color = charset_attrib_data[ch];
|
||||
}
|
||||
hidbuf[ofs] = ch;
|
||||
colorbuf[ofs] = color;
|
||||
}
|
||||
|
||||
void scroll_draw_column(byte col) {
|
||||
byte y;
|
||||
word ofs = col;
|
||||
for (y=0; y<ROWS; y++) {
|
||||
draw_cell(ofs, col, y);
|
||||
ofs += COLS;
|
||||
}
|
||||
}
|
||||
|
||||
void scroll_draw_row(byte row) {
|
||||
byte x;
|
||||
word ofs = row * COLS;
|
||||
for (x=0; x<COLS; x++) {
|
||||
draw_cell(ofs, x, row);
|
||||
++ofs;
|
||||
}
|
||||
}
|
||||
|
||||
/*{w:24,h:21,bpp:1,brev:1}*/
|
||||
const char SPRITE1[3*21] = {
|
||||
0x00,0x7F,0x00,0x01,0xFF,0xC0,0x03,0xFF,0xE0,
|
||||
0x03,0xE7,0xE0,0x07,0xD9,0xF0,0x07,0xDF,0xF0,
|
||||
0x07,0xD9,0xF0,0x03,0xE7,0xE0,0x03,0xFF,0xE0,
|
||||
0x03,0xFF,0xE0,0x02,0xFF,0xA0,0x01,0x7F,0x40,
|
||||
0x01,0x3E,0x40,0x00,0x9C,0x80,0x00,0x9C,0x80,
|
||||
0x00,0x49,0x00,0x00,0x49,0x00,0x00,0x3E,0x00,
|
||||
0x00,0x3E,0x00,0x00,0x3E,0x00,0x00,0x1C,0x00
|
||||
};
|
||||
|
||||
int playerx = 0;
|
||||
int playery = 0;
|
||||
int camerax = 0;
|
||||
int cameray = 0;
|
||||
|
||||
void update_player() {
|
||||
sprite_draw(0, playerx-camerax+172, playery-cameray+140, 255);
|
||||
}
|
||||
|
||||
void camera_follow(byte moving) {
|
||||
int dx, dy;
|
||||
dx = camerax - playerx;
|
||||
dy = cameray - playery;
|
||||
if (moving && abs(dx) < 32 && abs(dy) < 32) return;
|
||||
dx >>= 4;
|
||||
dy >>= 4;
|
||||
if (dx) {
|
||||
if (dx > 8) dx = 8;
|
||||
else if (dx < -8) dx = -8;
|
||||
camerax -= dx;
|
||||
scroll_horiz(dx);
|
||||
}
|
||||
if (dy) {
|
||||
if (dy > 8) dy = 8;
|
||||
else if (dy < -8) dy = -8;
|
||||
cameray -= dy;
|
||||
scroll_vert(dy);
|
||||
}
|
||||
}
|
||||
|
||||
void refresh_world(void) {
|
||||
byte i;
|
||||
for (i=0; i<25; i++) {
|
||||
scroll_draw_row(i);
|
||||
}
|
||||
}
|
||||
|
||||
void main(void) {
|
||||
|
||||
clrscr();
|
||||
|
||||
// setup scrolling library
|
||||
scroll_setup();
|
||||
|
||||
// multicolor character mode
|
||||
VIC.ctrl2 |= 0x10;
|
||||
VIC.bgcolor0 = 6;
|
||||
VIC.bgcolor1 = 0;
|
||||
VIC.bgcolor2 = 1;
|
||||
|
||||
// select character set @ 0x8800
|
||||
VIC.addr = 0x12;
|
||||
memcpy((char*)0x8800, charset_data, 520);
|
||||
|
||||
// setup sprite library and copy sprite to VIC bank
|
||||
sprite_clear();
|
||||
sprite_set_shapes(SPRITE1, 255, 1);
|
||||
sprshad.spr_color[0] = 13;
|
||||
|
||||
// install the joystick driver
|
||||
joy_install (joy_static_stddrv);
|
||||
|
||||
// repaint screen memory w/ the map
|
||||
refresh_world();
|
||||
|
||||
// infinite loop
|
||||
while (1) {
|
||||
static char speed;
|
||||
static char joy;
|
||||
static bool slowframe = false;
|
||||
// get joystick bits
|
||||
joy = joy_read(0);
|
||||
// speed up scrolling while button pressed
|
||||
speed = JOY_BTN_1(joy) ? 3 : 1;
|
||||
// if we copied screen memory last frame,
|
||||
// double speed of player for this frame
|
||||
if (slowframe) speed *= 2;
|
||||
// move sprite based on arrow keys
|
||||
if (JOY_LEFT(joy)) playerx -= speed;
|
||||
if (JOY_RIGHT(joy)) playerx += speed;
|
||||
if (JOY_UP(joy)) playery -= speed;
|
||||
if (JOY_DOWN(joy)) playery += speed;
|
||||
// move the camera?
|
||||
camera_follow(joy);
|
||||
slowframe = swap_needed;
|
||||
// animate sprite in shadow sprite ram
|
||||
update_player();
|
||||
// wait for vblank
|
||||
wait_vblank();
|
||||
// then update sprite registers
|
||||
sprite_update(visbuf);
|
||||
// update scroll registers
|
||||
// and swap screens if we must
|
||||
scroll_update();
|
||||
}
|
||||
}
|
||||
@ -124,6 +124,7 @@ void update_scoreboard() {
|
||||
|
||||
void add_score(int delta) {
|
||||
score = bcd_add(score, delta);
|
||||
update_scoreboard();
|
||||
}
|
||||
|
||||
// clear scoreboard and draw initial strings
|
||||
@ -242,13 +243,13 @@ void scroll_one_pixel_left() {
|
||||
}
|
||||
}
|
||||
|
||||
void detect_player_collision(byte bgcoll, byte sprcoll) {
|
||||
void detect_player_collision(byte bg_coll, byte spr_coll) {
|
||||
// did we hit a powerup? (#0 and #1)
|
||||
bool hit_powerup = (sprcoll & 0b011) == 0b011;
|
||||
bool hit_powerup = (spr_coll & 0b011) == 0b011;
|
||||
// did player and obstacle sprite (#0 and #2) collide?
|
||||
bool hit_obstacle = (sprcoll & 0b101) == 0b101;
|
||||
bool hit_obstacle = (spr_coll & 0b101) == 0b101;
|
||||
// did player (#0) collide with background?
|
||||
hit_obstacle |= (bgcoll & 0b001) != 0;
|
||||
hit_obstacle |= (bg_coll & 0b001) != 0;
|
||||
// did we hit anything bad?
|
||||
if (hit_obstacle) {
|
||||
// make player fall downward and backward
|
||||
@ -257,7 +258,6 @@ void detect_player_collision(byte bgcoll, byte sprcoll) {
|
||||
sprshad.spr_color[PLAYER_INDEX] = COLOR_LIGHTRED;
|
||||
SID_PLAY_TONE(500);
|
||||
if (score != 0) { add_score(0x9999); } // BCD -1
|
||||
update_scoreboard();
|
||||
} else {
|
||||
sprshad.spr_color[PLAYER_INDEX] = COLOR_GREEN;
|
||||
}
|
||||
@ -266,7 +266,6 @@ void detect_player_collision(byte bgcoll, byte sprcoll) {
|
||||
sprshad.spr_color[POWERUP_INDEX] += 1; // cycle colors
|
||||
SID_PLAY_TONE(8000);
|
||||
add_score(1);
|
||||
update_scoreboard();
|
||||
}
|
||||
}
|
||||
|
||||
@ -312,15 +311,15 @@ void main() {
|
||||
// game loop, repeat forever
|
||||
while (1) {
|
||||
// saved collision flags
|
||||
byte sprcoll, bgcoll;
|
||||
byte spr_coll, bg_coll;
|
||||
|
||||
// wait for end of frame
|
||||
waitvsync();
|
||||
|
||||
//--- START TIME CRITICAL SECTION
|
||||
// grab and reset collision flags
|
||||
sprcoll = VIC.spr_coll;
|
||||
bgcoll = VIC.spr_bg_coll;
|
||||
spr_coll = VIC.spr_coll;
|
||||
bg_coll = VIC.spr_bg_coll;
|
||||
|
||||
// update sprite registers from sprite shadow buffer
|
||||
sprite_update(DEFAULT_SCREEN);
|
||||
@ -330,7 +329,7 @@ void main() {
|
||||
//--- END TIME CRITICAL SECTION
|
||||
|
||||
// use collision flags to see if player collided
|
||||
detect_player_collision(bgcoll, sprcoll);
|
||||
detect_player_collision(bg_coll, spr_coll);
|
||||
|
||||
// get joystick bits and move player
|
||||
move_player(joy_read(0));
|
||||
|
||||
76
presets/c64/sprite_stretch.c
Normal file
76
presets/c64/sprite_stretch.c
Normal file
@ -0,0 +1,76 @@
|
||||
|
||||
//#link "common.c"
|
||||
#include "common.h"
|
||||
|
||||
//#link "rasterirq.ca65"
|
||||
#include "rasterirq.h"
|
||||
|
||||
//#link "sprites.c"
|
||||
#include "sprites.h"
|
||||
|
||||
#include <cbm_petscii_charmap.h>
|
||||
#include <cc65.h>
|
||||
|
||||
/*{w:24,h:21,bpp:1,brev:1}*/
|
||||
const char spriteshape[3*21] = {
|
||||
0x00,0x7F,0x00,0x01,0xFF,0xC0,0x03,0xFF,0xE0,
|
||||
0x03,0xE7,0xE0,0x07,0xD9,0xF0,0x07,0xDF,0xF0,
|
||||
0x07,0xD9,0xF0,0x03,0xE7,0xE0,0x03,0xFF,0xE0,
|
||||
0x03,0xFF,0xE0,0x02,0xFF,0xA0,0x01,0x7F,0x40,
|
||||
0x01,0x3E,0x40,0x00,0x9C,0x80,0x00,0x9C,0x80,
|
||||
0x00,0x49,0x00,0x00,0x49,0x00,0x00,0x3E,0x00,
|
||||
0x00,0x3E,0x00,0x00,0x3E,0x00,0x00,0x1C,0x00
|
||||
};
|
||||
|
||||
void sprite_stretch() {
|
||||
// get current raster line
|
||||
asm("lda $d012");
|
||||
// sprite Y expand bits = 255
|
||||
asm("ldx #$ff");
|
||||
asm("stx $d017");
|
||||
// wait for next raster line
|
||||
asm("@loop:");
|
||||
asm("cmp $d012");
|
||||
asm("beq @loop");
|
||||
// sprite Y expand bits = 0
|
||||
asm("inx");
|
||||
asm("stx $d017");
|
||||
}
|
||||
|
||||
void dlist_example(void) {
|
||||
|
||||
// stretch for the next 40 lines
|
||||
while (VIC.rasterline != 160) {
|
||||
sprite_stretch();
|
||||
}
|
||||
|
||||
VIC.spr0_y+=3;
|
||||
VIC.spr7_y-=2;
|
||||
|
||||
DLIST_RESTART(8*15);
|
||||
}
|
||||
|
||||
void main(void) {
|
||||
byte i;
|
||||
|
||||
clrscr();
|
||||
VIC.bordercolor = 0;
|
||||
|
||||
sprite_clear();
|
||||
sprite_set_shapes(spriteshape, 192, 1);
|
||||
|
||||
sprshad.spr_exp_x = 0xff;
|
||||
for (i=0; i<8; i++) {
|
||||
sprshad.spr_color[i] = i|8;
|
||||
sprite_draw(i, i*38+24, 120-i, 192);
|
||||
}
|
||||
sprite_update(DEFAULT_SCREEN);
|
||||
|
||||
DLIST_SETUP(dlist_example);
|
||||
|
||||
while (1) {
|
||||
if (STICK_MOVED(READ_STICK(0))) break;
|
||||
}
|
||||
|
||||
DLIST_DONE();
|
||||
}
|
||||
92
presets/c64/test_border_sprites.c
Normal file
92
presets/c64/test_border_sprites.c
Normal file
@ -0,0 +1,92 @@
|
||||
|
||||
//#link "common.c"
|
||||
#include "common.h"
|
||||
|
||||
//#link "rasterirq.ca65"
|
||||
#include "rasterirq.h"
|
||||
|
||||
//#link "sprites.c"
|
||||
#include "sprites.h"
|
||||
|
||||
#include <cbm_petscii_charmap.h>
|
||||
#include <cc65.h>
|
||||
|
||||
/*{w:24,h:21,bpp:1,brev:1}*/
|
||||
const char spriteshape[3*21] = {
|
||||
0x00,0x7F,0x00,0x01,0xFF,0xC0,0x03,0xFF,0xE0,
|
||||
0x03,0xE7,0xE0,0x07,0xD9,0xF0,0x07,0xDF,0xF0,
|
||||
0x07,0xD9,0xF0,0x03,0xE7,0xE0,0x03,0xFF,0xE0,
|
||||
0x03,0xFF,0xE0,0x02,0xFF,0xA0,0x01,0x7F,0x40,
|
||||
0x01,0x3E,0x40,0x00,0x9C,0x80,0x00,0x9C,0x80,
|
||||
0x00,0x49,0x00,0x00,0x49,0x00,0x00,0x3E,0x00,
|
||||
0x00,0x3E,0x00,0x00,0x3E,0x00,0x00,0x1C,0x00
|
||||
};
|
||||
|
||||
byte scroll_x = 0;
|
||||
byte scroll_y = 0;
|
||||
|
||||
void dlist_example(void) {
|
||||
VIC.ctrl1 = VIC_CTRL1_DEN | VIC_CTRL1_RSEL;
|
||||
VIC.bordercolor = 5;
|
||||
|
||||
// Flexible line distance (FLD)
|
||||
// this adds a gap of 1-6 scanlines
|
||||
DLIST_NEXT(150);
|
||||
VIC.ctrl1 = (scroll_y & 7) | 0x18;
|
||||
VIC.bordercolor = 2;
|
||||
|
||||
// this opens up the vertical borders
|
||||
// it must be done on the last row (247-249)
|
||||
DLIST_NEXT(249);
|
||||
VIC.ctrl1 = VIC_CTRL1_DEN;
|
||||
|
||||
// move sprites and restart the display list
|
||||
scroll_x++;
|
||||
scroll_y++;
|
||||
VIC.spr0_y++;
|
||||
VIC.spr7_y--;
|
||||
VIC.bordercolor = 4;
|
||||
DLIST_RESTART(30);
|
||||
}
|
||||
|
||||
|
||||
void SieveOfEratosthenes() {
|
||||
const int n = 1023;
|
||||
int primes[1024];
|
||||
int i,p;
|
||||
memset(primes, 1, sizeof(primes));
|
||||
|
||||
for (p = 2; p*p <= n; p++) {
|
||||
if (primes[p]) {
|
||||
for (i = p*p; i <= n; i += p)
|
||||
primes[i] = 0;
|
||||
}
|
||||
}
|
||||
|
||||
for (p = 2; p <= n; p++)
|
||||
if (primes[p])
|
||||
printf("%d ", p);
|
||||
}
|
||||
|
||||
void main(void) {
|
||||
byte i;
|
||||
|
||||
clrscr();
|
||||
|
||||
sprite_clear();
|
||||
sprite_set_shapes(spriteshape, 192, 1);
|
||||
|
||||
sprshad.spr_exp_x = 0xff;
|
||||
for (i=0; i<8; i++) {
|
||||
sprshad.spr_color[i] = i+3;
|
||||
sprite_draw(i, i*38+24, 248, 192);
|
||||
}
|
||||
sprite_update(DEFAULT_SCREEN);
|
||||
|
||||
DLIST_SETUP(dlist_example);
|
||||
|
||||
// do something complicated while IRQ runs...
|
||||
while (1) {
|
||||
SieveOfEratosthenes();
|
||||
}
|
||||
}
|
||||
143
presets/c64/test_display_list.c
Normal file
143
presets/c64/test_display_list.c
Normal file
@ -0,0 +1,143 @@
|
||||
|
||||
#include "common.h"
|
||||
//#link "common.c"
|
||||
|
||||
#include "rasterirq.h"
|
||||
//#link "rasterirq.ca65"
|
||||
|
||||
#include "bcd.h"
|
||||
//#link "bcd.c"
|
||||
|
||||
///// DEFINES
|
||||
|
||||
#define GAME_BASE 0x400 // scrolling screen ram
|
||||
#define SCORE_BASE 0x2c00 // scoreboard screen ram
|
||||
|
||||
#define SCROLL_TOP 8 // scroll top row
|
||||
#define SCROLL_ROWS 14 // scroll # of rows
|
||||
#define GROUND_ROW 7 // ground row (+ top row)
|
||||
|
||||
///// VARIABLES
|
||||
|
||||
word scroll_x = 0; // current scroll X position
|
||||
word score = 0; // current player score
|
||||
|
||||
///// FUNCTIONS
|
||||
|
||||
// display list used by rasterirq.h
|
||||
// draws scoreboard and sets scroll register
|
||||
void display_list() {
|
||||
// set x scroll register to scroll value
|
||||
SET_SCROLL_X(scroll_x);
|
||||
// set background color
|
||||
VIC.bgcolor[0] = COLOR_CYAN;
|
||||
// next interrupt is two rows from bottom
|
||||
DLIST_NEXT(250-16);
|
||||
|
||||
// set background color
|
||||
VIC.bgcolor[0] = COLOR_BLUE;
|
||||
// screen memory = 0x2800
|
||||
SET_VIC_SCREEN(SCORE_BASE);
|
||||
// clear x scroll register
|
||||
SET_SCROLL_X(0);
|
||||
// next interrupt is bottom of frame
|
||||
DLIST_NEXT(250);
|
||||
|
||||
// reset screen to 0x400
|
||||
SET_VIC_SCREEN(0x400);
|
||||
// next interrupt is above top of next frame
|
||||
DLIST_RESTART(40);
|
||||
}
|
||||
|
||||
void update_scoreboard() {
|
||||
draw_bcd_word(SCRNADR(SCORE_BASE,7,24), score);
|
||||
}
|
||||
|
||||
void add_score(int delta) {
|
||||
score = bcd_add(score, delta);
|
||||
}
|
||||
|
||||
// clear scoreboard and draw initial strings
|
||||
void init_scoreboard() {
|
||||
memset((void*)SCORE_BASE, ' ', 1024);
|
||||
memcpy((void*)SCRNADR(SCORE_BASE,1,24), "SCORE:", 6);
|
||||
update_scoreboard();
|
||||
}
|
||||
|
||||
byte get_char_for_row(byte row) {
|
||||
// ground?
|
||||
if (row >= GROUND_ROW) { return 253; }
|
||||
// obstacle?
|
||||
if (row >= GROUND_ROW-3) {
|
||||
// only show obstacle for certain values of scroll_x
|
||||
if ((scroll_x & 0b1110000) == 0) { return 247; }
|
||||
}
|
||||
// default is the sky (empty space)
|
||||
return 32;
|
||||
}
|
||||
|
||||
void draw_right_column() {
|
||||
// get the top-right corner address of scroll area
|
||||
word addr = SCRNADR(GAME_BASE, 39, SCROLL_TOP);
|
||||
byte row;
|
||||
// draw one character per row
|
||||
for (row=0; row<SCROLL_ROWS; row++) {
|
||||
POKE(addr, get_char_for_row(row));
|
||||
addr += 40;
|
||||
}
|
||||
}
|
||||
|
||||
void scroll_one_column_left() {
|
||||
// copy several rows of screen memory
|
||||
// backwards one byte
|
||||
const word start = SCRNADR(GAME_BASE, 0, SCROLL_TOP);
|
||||
const word nbytes = SCROLL_ROWS*40-1;
|
||||
memcpy((byte*)start, (byte*)start+1, nbytes);
|
||||
// draw the right column of characters
|
||||
draw_right_column();
|
||||
}
|
||||
|
||||
void scroll_one_pixel_left() {
|
||||
// scroll left one pixel
|
||||
scroll_x -= 1;
|
||||
// set scroll register with lower three bits
|
||||
VIC.ctrl2 = (VIC.ctrl2 & ~7) | (scroll_x & 7);
|
||||
// move screen memory if the scroll register
|
||||
// has just gone past 0 and wrapped to 7
|
||||
if ((scroll_x & 7) == 7) {
|
||||
scroll_one_column_left();
|
||||
}
|
||||
}
|
||||
|
||||
void main() {
|
||||
// clear screen, set background color
|
||||
clrscr();
|
||||
VIC.bgcolor[0] = COLOR_CYAN;
|
||||
VIC.bordercolor = COLOR_BLUE;
|
||||
|
||||
// set vertical scroll = 3, 25 rows
|
||||
VIC.ctrl1 = 0b00011011;
|
||||
// set 38 column mode (for X scrolling)
|
||||
VIC.ctrl2 = 0b00000000;
|
||||
// set uniform color of characters
|
||||
memset(COLOR_RAM, COLOR_WHITE, 1000);
|
||||
|
||||
// setup scoreboard
|
||||
init_scoreboard();
|
||||
|
||||
// setup rasterirq library for scoreboard split
|
||||
DLIST_SETUP(display_list);
|
||||
|
||||
// game loop, repeat forever
|
||||
while (1) {
|
||||
// wait for end of frame
|
||||
waitvsync();
|
||||
|
||||
// scroll screen
|
||||
scroll_one_pixel_left();
|
||||
|
||||
// add to score
|
||||
add_score(0x0001);
|
||||
update_scoreboard();
|
||||
}
|
||||
}
|
||||
@ -2,7 +2,6 @@
|
||||
// ported from
|
||||
// https://odensskjegg.home.blog/2018/12/29/recreating-the-commodore-64-user-guide-code-samples-in-cc65-part-three-sprites/
|
||||
|
||||
//#include "common.h"
|
||||
#include <peekpoke.h>
|
||||
#include <c64.h>
|
||||
|
||||
@ -71,13 +70,13 @@ int main (void)
|
||||
rx -= 24;
|
||||
if (rx >= 0 && rx < 366) {
|
||||
// Set MSB of x coordinate for sprite if x position > 255
|
||||
if (x >= 256) {
|
||||
if (rx >= 256) {
|
||||
msb |= LUT[t]; // look up 1 << t
|
||||
}
|
||||
VIC.spr_pos[t].x = x;
|
||||
VIC.spr_pos[t].x = rx;
|
||||
// Y position is an indirect Sinus function of X, using array
|
||||
// index for retrieving the Y value
|
||||
VIC.spr_pos[t].y = yValues[x & 63] + 40;
|
||||
VIC.spr_pos[t].y = yValues[rx & 63] + 40;
|
||||
} else {
|
||||
VIC.spr_pos[t].x = 0;
|
||||
}
|
||||
|
||||
67
presets/vcs/skeleton.remote:llvm-mos
Normal file
67
presets/vcs/skeleton.remote:llvm-mos
Normal file
@ -0,0 +1,67 @@
|
||||
|
||||
#include <atari2600.h>
|
||||
#include <vcslib.h>
|
||||
#include <peekpoke.h>
|
||||
#include <mapper.h>
|
||||
|
||||
#ifdef __ATARI2600_MAPPER_3E__
|
||||
MAPPER_CART_ROM_KB(6); // 6K ROM
|
||||
#endif
|
||||
|
||||
#ifdef MAPPER_BANKED_ROM
|
||||
#define ROM_BANK(index) __attribute__((noinline, section(".rom"#index)))
|
||||
#else
|
||||
#define ROM_BANK(index)
|
||||
#endif
|
||||
|
||||
#define KERNEL_BANK 1
|
||||
|
||||
ROM_BANK(KERNEL_BANK) void my_preframe(void) {
|
||||
}
|
||||
|
||||
ROM_BANK(KERNEL_BANK) void my_doframe(void) {
|
||||
int i;
|
||||
// Set player sprite color
|
||||
TIA.colup0 = COLOR_CONV(0xfe);
|
||||
// Draw each scanline
|
||||
for (i=0; i<192; i++) {
|
||||
TIA.wsync = 0; // sync to scanline
|
||||
TIA.colubk = i; // set background color
|
||||
TIA.pf1 = i; // set playfield
|
||||
TIA.grp0 = i; // set sprite bitmap
|
||||
}
|
||||
TIA.grp0 = 0; // clear sprite
|
||||
TIA.colubk = 0; // clear background
|
||||
}
|
||||
|
||||
ROM_BANK(KERNEL_BANK) void my_postframe(void) {
|
||||
// additional post-frame processing goes here
|
||||
}
|
||||
|
||||
// Display kernel loop
|
||||
ROM_BANK(KERNEL_BANK) void do_kernel_loop() {
|
||||
// loop until reset released
|
||||
while (SW_RESET()) { }
|
||||
// loop forever
|
||||
while (1) {
|
||||
kernel_1();
|
||||
my_preframe();
|
||||
kernel_2();
|
||||
my_doframe();
|
||||
kernel_3();
|
||||
my_postframe();
|
||||
kernel_4();
|
||||
}
|
||||
}
|
||||
|
||||
int main() {
|
||||
|
||||
// test banked rom call, if available
|
||||
#ifdef MAPPER_BANKED_ROM
|
||||
banked_call_rom(KERNEL_BANK, do_kernel_loop);
|
||||
#else
|
||||
do_kernel_loop();
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -1,30 +1,30 @@
|
||||
|
||||
import { hex, byte2signed } from "./util";
|
||||
import { Platform } from "./baseplatform";
|
||||
import { OpcodeMetadata, Platform } from "./baseplatform";
|
||||
|
||||
const debug = false;
|
||||
|
||||
export interface CodeAnalyzer {
|
||||
showLoopTimingForPC(pc:number);
|
||||
pc2clockrange : {[key:number]:ClockRange};
|
||||
MAX_CLOCKS : number;
|
||||
showLoopTimingForPC(pc: number);
|
||||
pc2clockrange: { [key: number]: ClockRange };
|
||||
MAX_CLOCKS: number;
|
||||
}
|
||||
|
||||
/// VCS TIMING ANALYSIS
|
||||
|
||||
// [taken, not taken]
|
||||
const BRANCH_CONSTRAINTS = [
|
||||
[{N:0},{N:1}],
|
||||
[{N:1},{N:0}],
|
||||
[{V:0},{V:1}],
|
||||
[{V:1},{V:0}],
|
||||
[{C:0},{C:1}],
|
||||
[{C:1},{C:0}],
|
||||
[{Z:0},{Z:1}],
|
||||
[{Z:1},{Z:0}]
|
||||
[{ N: 0 }, { N: 1 }],
|
||||
[{ N: 1 }, { N: 0 }],
|
||||
[{ V: 0 }, { V: 1 }],
|
||||
[{ V: 1 }, { V: 0 }],
|
||||
[{ C: 0 }, { C: 1 }],
|
||||
[{ C: 1 }, { C: 0 }],
|
||||
[{ Z: 0 }, { Z: 1 }],
|
||||
[{ Z: 1 }, { Z: 0 }]
|
||||
];
|
||||
|
||||
function constraintEquals(a,b) {
|
||||
function constraintEquals(a, b) {
|
||||
if (a == null || b == null)
|
||||
return null;
|
||||
for (var n in a) {
|
||||
@ -44,15 +44,15 @@ interface ClockRange {
|
||||
}
|
||||
|
||||
abstract class CodeAnalyzer6502 implements CodeAnalyzer {
|
||||
pc2clockrange : {[key:number]:ClockRange} = {};
|
||||
jsrresult : {[key:number]:ClockRange} = {};
|
||||
START_CLOCKS : number;
|
||||
MAX_CLOCKS : number;
|
||||
WRAP_CLOCKS : boolean;
|
||||
platform : Platform;
|
||||
MAX_CYCLES : number = 2000;
|
||||
|
||||
constructor(platform : Platform) {
|
||||
pc2clockrange: { [key: number]: ClockRange } = {};
|
||||
jsrresult: { [key: number]: ClockRange } = {};
|
||||
START_CLOCKS: number;
|
||||
MAX_CLOCKS: number;
|
||||
WRAP_CLOCKS: boolean;
|
||||
platform: Platform;
|
||||
MAX_CYCLES: number = 2000;
|
||||
|
||||
constructor(platform: Platform) {
|
||||
this.platform = platform;
|
||||
}
|
||||
|
||||
@ -62,12 +62,12 @@ abstract class CodeAnalyzer6502 implements CodeAnalyzer {
|
||||
return meta; // minCycles, maxCycles
|
||||
}
|
||||
|
||||
traceInstructions(pc:number, minclocks:number, maxclocks:number, subaddr:number, constraints) {
|
||||
traceInstructions(pc: number, minclocks: number, maxclocks: number, subaddr: number, constraints) {
|
||||
if (debug) console.log("trace", hex(pc), minclocks, maxclocks);
|
||||
if (!constraints) constraints = {};
|
||||
var modified = true;
|
||||
var abort = false;
|
||||
for (let i=0; modified && !abort; i++) {
|
||||
for (let i = 0; modified && !abort; i++) {
|
||||
if (i >= this.MAX_CYCLES) {
|
||||
console.log("too many cycles @", hex(pc), "routine", hex(subaddr));
|
||||
break;
|
||||
@ -77,10 +77,10 @@ abstract class CodeAnalyzer6502 implements CodeAnalyzer {
|
||||
// wrap clocks
|
||||
minclocks = minclocks % this.MAX_CLOCKS;
|
||||
maxclocks = maxclocks % this.MAX_CLOCKS;
|
||||
if (maxclocks == minclocks-1) {
|
||||
if (maxclocks == minclocks - 1) {
|
||||
if (debug) console.log("0-75", hex(pc), minclocks, maxclocks);
|
||||
minclocks = 0;
|
||||
maxclocks = this.MAX_CLOCKS-1;
|
||||
maxclocks = this.MAX_CLOCKS - 1;
|
||||
}
|
||||
} else {
|
||||
// truncate clocks
|
||||
@ -88,13 +88,13 @@ abstract class CodeAnalyzer6502 implements CodeAnalyzer {
|
||||
maxclocks = Math.min(this.MAX_CLOCKS, maxclocks);
|
||||
}
|
||||
let meta = this.getClockCountsAtPC(pc);
|
||||
let lob = this.platform.readAddress(pc+1);
|
||||
let hib = this.platform.readAddress(pc+2);
|
||||
let lob = this.platform.readAddress(pc + 1);
|
||||
let hib = this.platform.readAddress(pc + 2);
|
||||
let addr = lob + (hib << 8);
|
||||
let pc0 = pc;
|
||||
let pcrange = this.pc2clockrange[pc0];
|
||||
if (pcrange == null) {
|
||||
this.pc2clockrange[pc0] = pcrange = {minclocks:minclocks, maxclocks:maxclocks};
|
||||
this.pc2clockrange[pc0] = pcrange = { minclocks: minclocks, maxclocks: maxclocks };
|
||||
if (debug) console.log("new", hex(pc), hex(pc0), hex(subaddr), minclocks, maxclocks);
|
||||
modified = true;
|
||||
}
|
||||
@ -103,7 +103,7 @@ abstract class CodeAnalyzer6502 implements CodeAnalyzer {
|
||||
if (this.WRAP_CLOCKS && (minclocks <= maxclocks) != (pcrange.minclocks <= pcrange.maxclocks)) {
|
||||
if (debug) console.log("wrap", hex(pc), hex(pc0), hex(subaddr), minclocks, maxclocks, pcrange);
|
||||
pcrange.minclocks = minclocks = 0;
|
||||
pcrange.maxclocks = maxclocks = this.MAX_CLOCKS-1;
|
||||
pcrange.maxclocks = maxclocks = this.MAX_CLOCKS - 1;
|
||||
modified = true;
|
||||
}
|
||||
if (minclocks < pcrange.minclocks) {
|
||||
@ -124,106 +124,88 @@ abstract class CodeAnalyzer6502 implements CodeAnalyzer {
|
||||
pc += meta.insnlength;
|
||||
var oldconstraints = constraints;
|
||||
constraints = null;
|
||||
// TODO: if jump to zero-page, maybe assume RTS?
|
||||
switch (meta.opcode) {
|
||||
case 0x19: case 0x1d:
|
||||
case 0x39: case 0x3d:
|
||||
case 0x59: case 0x5d:
|
||||
case 0x79: case 0x7d:
|
||||
case 0xb9: case 0xbb:
|
||||
case 0xbc: case 0xbd: case 0xbe: case 0xbf:
|
||||
case 0xd9: case 0xdd:
|
||||
case 0xf9: case 0xfd:
|
||||
if (lob == 0) meta.maxCycles -= 1; // no page boundary crossed
|
||||
break;
|
||||
// TODO: only VCS
|
||||
case 0x85:
|
||||
if (lob == 0x2) { // STA WSYNC
|
||||
minclocks = maxclocks = 0;
|
||||
meta.minCycles = meta.maxCycles = 0;
|
||||
}
|
||||
break;
|
||||
// TODO: only NES (sprite 0 poll)
|
||||
case 0x2c:
|
||||
if (lob == 0x02 && hib == 0x20) { // BIT $2002
|
||||
minclocks = 0;
|
||||
maxclocks = 4; // uncertainty b/c of assumed branch poll
|
||||
meta.minCycles = meta.maxCycles = 0;
|
||||
}
|
||||
break;
|
||||
// TODO: only Apple2 (vapor lock)
|
||||
/*
|
||||
case 0xad:
|
||||
if (lob == 0x61 && hib == 0xc0) { // LDA $C061
|
||||
minclocks = 0;
|
||||
maxclocks = 4; // uncertainty?
|
||||
meta.minCycles = meta.maxCycles = 0;
|
||||
}
|
||||
break;
|
||||
*/
|
||||
case 0x20: // JSR
|
||||
// TODO: handle bare RTS case
|
||||
minclocks += meta.minCycles;
|
||||
maxclocks += meta.maxCycles;
|
||||
this.traceInstructions(addr, minclocks, maxclocks, addr, constraints);
|
||||
var result = this.jsrresult[addr];
|
||||
if (result) {
|
||||
minclocks = result.minclocks;
|
||||
maxclocks = result.maxclocks;
|
||||
} else {
|
||||
console.log("No JSR result!", hex(pc), hex(addr));
|
||||
minclocks = maxclocks;
|
||||
//return;
|
||||
}
|
||||
break;
|
||||
case 0x4c: // JMP
|
||||
pc = addr; // TODO: make sure in ROM space
|
||||
break;
|
||||
case 0x40: // RTI
|
||||
abort = true;
|
||||
break;
|
||||
case 0x60: // RTS
|
||||
if (subaddr) { // TODO: 0 doesn't work
|
||||
// TODO: combine with previous result
|
||||
var result = this.jsrresult[subaddr];
|
||||
if (!result) {
|
||||
result = {minclocks:minclocks, maxclocks:maxclocks};
|
||||
let syncMaxCycles = this.getMaxCyclesForSync(meta, lob, hib);
|
||||
if (typeof syncMaxCycles === 'number') {
|
||||
minclocks = 0;
|
||||
maxclocks = syncMaxCycles;
|
||||
meta.minCycles = meta.maxCycles = 0;
|
||||
} else {
|
||||
// TODO: if jump to zero-page, maybe assume RTS?
|
||||
switch (meta.opcode) {
|
||||
case 0x19: case 0x1d:
|
||||
case 0x39: case 0x3d:
|
||||
case 0x59: case 0x5d:
|
||||
case 0x79: case 0x7d:
|
||||
case 0xb9: case 0xbb:
|
||||
case 0xbc: case 0xbd: case 0xbe: case 0xbf:
|
||||
case 0xd9: case 0xdd:
|
||||
case 0xf9: case 0xfd:
|
||||
if (lob == 0) meta.maxCycles -= 1; // no page boundary crossed
|
||||
break;
|
||||
case 0x20: // JSR
|
||||
// TODO: handle bare RTS case
|
||||
minclocks += meta.minCycles;
|
||||
maxclocks += meta.maxCycles;
|
||||
this.traceInstructions(addr, minclocks, maxclocks, addr, constraints);
|
||||
var result = this.jsrresult[addr];
|
||||
if (result) {
|
||||
minclocks = result.minclocks;
|
||||
maxclocks = result.maxclocks;
|
||||
} else {
|
||||
result = {
|
||||
minclocks:Math.min(minclocks,result.minclocks),
|
||||
maxclocks:Math.max(maxclocks,result.maxclocks)
|
||||
}
|
||||
console.log("No JSR result!", hex(pc), hex(addr));
|
||||
minclocks = maxclocks;
|
||||
//return;
|
||||
}
|
||||
this.jsrresult[subaddr] = result;
|
||||
console.log("RTS", hex(pc), hex(subaddr), this.jsrresult[subaddr]);
|
||||
}
|
||||
return;
|
||||
case 0x10: case 0x30: // branch
|
||||
case 0x50: case 0x70:
|
||||
case 0x90: case 0xB0:
|
||||
case 0xD0: case 0xF0:
|
||||
var newpc = pc + byte2signed(lob);
|
||||
var crosspage = (pc>>8) != (newpc>>8);
|
||||
if (!crosspage) meta.maxCycles--;
|
||||
// TODO: other instructions might modify flags too
|
||||
var cons = BRANCH_CONSTRAINTS[Math.floor((meta.opcode-0x10)/0x20)];
|
||||
var cons0 = constraintEquals(oldconstraints, cons[0]);
|
||||
var cons1 = constraintEquals(oldconstraints, cons[1]);
|
||||
// recursively trace the taken branch
|
||||
if (true || cons0 !== false) { // TODO?
|
||||
this.traceInstructions(newpc, minclocks+meta.maxCycles, maxclocks+meta.maxCycles, subaddr, cons[0]);
|
||||
}
|
||||
// abort if we will always take the branch
|
||||
if (cons1 === false) {
|
||||
console.log("branch always taken", hex(pc), oldconstraints, cons[1]);
|
||||
break;
|
||||
case 0x4c: // JMP
|
||||
pc = addr; // TODO: make sure in ROM space
|
||||
break;
|
||||
case 0x40: // RTI
|
||||
abort = true;
|
||||
}
|
||||
constraints = cons[1]; // not taken
|
||||
meta.maxCycles = meta.minCycles; // branch not taken, no extra clock(s)
|
||||
break;
|
||||
case 0x6c:
|
||||
console.log("Instruction not supported!", hex(pc), hex(meta.opcode), meta); // TODO
|
||||
return;
|
||||
break;
|
||||
case 0x60: // RTS
|
||||
if (subaddr) { // TODO: 0 doesn't work
|
||||
// TODO: combine with previous result
|
||||
var result = this.jsrresult[subaddr];
|
||||
if (!result) {
|
||||
result = { minclocks: minclocks, maxclocks: maxclocks };
|
||||
} else {
|
||||
result = {
|
||||
minclocks: Math.min(minclocks, result.minclocks),
|
||||
maxclocks: Math.max(maxclocks, result.maxclocks)
|
||||
}
|
||||
}
|
||||
this.jsrresult[subaddr] = result;
|
||||
console.log("RTS", hex(pc), hex(subaddr), this.jsrresult[subaddr]);
|
||||
}
|
||||
return;
|
||||
case 0x10: case 0x30: // branch
|
||||
case 0x50: case 0x70:
|
||||
case 0x90: case 0xB0:
|
||||
case 0xD0: case 0xF0:
|
||||
var newpc = pc + byte2signed(lob);
|
||||
var crosspage = (pc >> 8) != (newpc >> 8);
|
||||
if (!crosspage) meta.maxCycles--;
|
||||
// TODO: other instructions might modify flags too
|
||||
var cons = BRANCH_CONSTRAINTS[Math.floor((meta.opcode - 0x10) / 0x20)];
|
||||
var cons0 = constraintEquals(oldconstraints, cons[0]);
|
||||
var cons1 = constraintEquals(oldconstraints, cons[1]);
|
||||
// recursively trace the taken branch
|
||||
if (true || cons0 !== false) { // TODO?
|
||||
this.traceInstructions(newpc, minclocks + meta.maxCycles, maxclocks + meta.maxCycles, subaddr, cons[0]);
|
||||
}
|
||||
// abort if we will always take the branch
|
||||
if (cons1 === false) {
|
||||
console.log("branch always taken", hex(pc), oldconstraints, cons[1]);
|
||||
abort = true;
|
||||
}
|
||||
constraints = cons[1]; // not taken
|
||||
meta.maxCycles = meta.minCycles; // branch not taken, no extra clock(s)
|
||||
break;
|
||||
case 0x6c:
|
||||
console.log("Instruction not supported!", hex(pc), hex(meta.opcode), meta); // TODO
|
||||
return;
|
||||
}
|
||||
}
|
||||
// add min/max instruction time to min/max clocks bound
|
||||
if (debug) console.log("add", hex(pc), meta.minCycles, meta.maxCycles);
|
||||
@ -232,41 +214,65 @@ abstract class CodeAnalyzer6502 implements CodeAnalyzer {
|
||||
}
|
||||
}
|
||||
|
||||
showLoopTimingForPC(pc:number) {
|
||||
showLoopTimingForPC(pc: number) {
|
||||
this.pc2clockrange = {};
|
||||
this.jsrresult = {};
|
||||
// recurse through all traces
|
||||
this.traceInstructions(pc | this.platform.getOriginPC(), this.START_CLOCKS, this.MAX_CLOCKS, 0, {});
|
||||
}
|
||||
|
||||
getMaxCyclesForSync(meta: OpcodeMetadata, lob: number, hib: number) {
|
||||
}
|
||||
}
|
||||
|
||||
// 76 cycles
|
||||
export class CodeAnalyzer_vcs extends CodeAnalyzer6502 {
|
||||
constructor(platform : Platform) {
|
||||
constructor(platform: Platform) {
|
||||
super(platform);
|
||||
this.MAX_CLOCKS = 76; // 1 scanline
|
||||
this.START_CLOCKS = 0; // TODO?
|
||||
this.WRAP_CLOCKS = true;
|
||||
}
|
||||
getMaxCyclesForSync(meta: OpcodeMetadata, lob: number, hib: number) {
|
||||
if (meta.opcode == 0x85) {
|
||||
if (lob == 0x2) { // STA WSYNC
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// https://wiki.nesdev.com/w/index.php/PPU_rendering#Line-by-line_timing
|
||||
// TODO: sprite 0 hit, CPU stalls
|
||||
export class CodeAnalyzer_nes extends CodeAnalyzer6502 {
|
||||
constructor(platform : Platform) {
|
||||
constructor(platform: Platform) {
|
||||
super(platform);
|
||||
this.MAX_CLOCKS = 114; // 341 clocks for 3 scanlines
|
||||
this.START_CLOCKS = 0;
|
||||
this.WRAP_CLOCKS = true;
|
||||
}
|
||||
getMaxCyclesForSync(meta: OpcodeMetadata, lob: number, hib: number) {
|
||||
if (meta.opcode == 0x2c) {
|
||||
if (lob == 0x02 && hib == 0x20) { // BIT $2002
|
||||
return 4; // uncertainty b/c of assumed branch poll
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
export class CodeAnalyzer_apple2 extends CodeAnalyzer6502 {
|
||||
constructor(platform : Platform) {
|
||||
constructor(platform: Platform) {
|
||||
super(platform);
|
||||
this.MAX_CLOCKS = 65;
|
||||
this.START_CLOCKS = 0;
|
||||
this.WRAP_CLOCKS = true;
|
||||
}
|
||||
getMaxCyclesForSync(meta: OpcodeMetadata, lob: number, hib: number) {
|
||||
if (meta.opcode == 0xad) {
|
||||
if (lob == 0x61 && hib == 0xc0) { // LDA $C061
|
||||
return 4; // uncertainty b/c of assumed branch poll
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -13,15 +13,17 @@ const C64_PRESETS = [
|
||||
{id:'joymove.c', name:'Sprite Movement'},
|
||||
{id:'sprite_collision.c', name:'Sprite Collision'},
|
||||
{id:'scroll1.c', name:'Scrolling (Single Buffer)'},
|
||||
{id:'test_display_list.c', name:'Display List / Raster IRQ'},
|
||||
{id:'scrolling_text.c', name:'Big Scrolling Text'},
|
||||
{id:'side_scroller.c', name:'Side-Scrolling Game'},
|
||||
{id:'scroll2.c', name:'Scrolling (Double Buffer)'},
|
||||
{id:'scroll3.c', name:'Scrolling (Multidirectional)'},
|
||||
{id:'scroll4.c', name:'Scrolling (Color RAM Buffering)'},
|
||||
{id:'scroll5.c', name:'Scrolling (Camera Following)'},
|
||||
{id:'side_scroller.c', name:'Side-Scrolling Game'},
|
||||
{id:'scrollingmap1.c', name:'Scrolling Tile Map'},
|
||||
{id:'fullscrollgame.c', name:'Full-Scrolling Game'},
|
||||
{id:'test_multiplex.c', name:'Sprite Retriggering'},
|
||||
{id:'test_multispritelib.c', name:'Sprite Multiplexing Library'},
|
||||
{id:'scrolling_text.c', name:'Big Scrolling Text'},
|
||||
{id:'mcbitmap.c', name:'Multicolor Bitmap Mode'},
|
||||
{id:'testlz4.c', name:'LZ4 Bitmap Compression'},
|
||||
//{id:'mandel.c', name:'Mandelbrot Fractal'},
|
||||
@ -29,6 +31,9 @@ const C64_PRESETS = [
|
||||
//{id:'sidtune.dasm', name:'Tiny SID Tune (ASM)'},
|
||||
{id:'siddemo.c', name:'SID Player Demo'},
|
||||
{id:'climber.c', name:'Climber Game'},
|
||||
{id:'test_border_sprites.c', name:'Sprites in the Borders'},
|
||||
{id:'sprite_stretch.c', name:'Sprite Stretching'},
|
||||
{id:'plasma.c', name:'Plasma Demo'},
|
||||
{id:'hello.wiz', name:'Hello Wiz (Wiz)'},
|
||||
];
|
||||
|
||||
|
||||
@ -18,7 +18,7 @@ const LLVM_MOS_TOOL: ServerBuildTool = {
|
||||
default: {
|
||||
binpath: 'llvm-mos/bin',
|
||||
command: 'mos-clang',
|
||||
args: ['-Os', '-g', '-o', '$OUTFILE', '$INFILES'],
|
||||
args: ['-Os', '-g', '-D', '__8BITWORKSHOP__', '-o', '$OUTFILE', '$INFILES'],
|
||||
},
|
||||
debug: { // TODO
|
||||
binpath: 'llvm-mos/bin',
|
||||
|
||||
Loading…
Reference in New Issue
Block a user