Full PS1 ASM Hello World with PsyQ
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*.o
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*.ps1.bin
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*.exe
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/PrismPs1
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/saltelsasso.ps1
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// Demonstrate DISP/DRAW env, font setup, and display a text.
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// Schnappy 2020
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// Based on Lameguy64 tutorial : http://lameguy64.net/svn/pstutorials/chapter1/1-display.html
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#include <sys/types.h>
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#include <stdio.h>
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#include <libgte.h>
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#include <libetc.h>
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#include <libgpu.h>
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#define VMODE 1 // Video Mode : 0 : NTSC, 1: PAL
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#define SCREENXRES 320 // Screen width
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#define SCREENYRES 240 // Screen height
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#define CENTERX SCREENXRES/2 // Center of screen on x
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#define CENTERY SCREENYRES/2 // Center of screen on y
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#define FONTSIZE 8 * 7 // Text Field Height
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//DISPENV disp[2]; // Double buffered DISPENV and DRAWENV
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//DRAWENV draw[2];
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extern DISPENV disp[2];
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extern DRAWENV draw[2];
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short db = 0; // index of which buffer is used, values 0, 1
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//extern void HelloMain();
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// void SetDefDispEnv1(DISPENV *disp_, int x,int y,int yy)
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// {
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// SetDefDispEnv(disp_, x,y, SCREENXRES,yy);
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// }
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// void Print12345(char c1,char c2,char c3,char c4,char c5)
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// {
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// char str[6];
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// str[0] = c1;
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// str[1] = c2;
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// str[2] = c3;
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// str[3] = c4;
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// str[4] = c5;
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// str[5] = 0;
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// FntPrint(str);
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// }
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void c_init(void)
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{
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//ResetGraph(0); // Initialize drawing engine with a complete reset (0)
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//SetDefDispEnv1(&disp[0]);
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//SetDefDispEnv(&disp[0], 0, 0 , SCREENXRES, SCREENYRES); // Set display area for both &disp[0] and &disp[1]
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//SetDefDispEnv(&disp[1], 0, SCREENYRES, SCREENXRES, SCREENYRES); // &disp[0] is on top of &disp[1]
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//SetDefDrawEnv(&draw[0], 0, SCREENYRES, SCREENXRES, SCREENYRES); // Set draw for both &draw[0] and &draw[1]
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//SetDefDrawEnv(&draw[1], 0, 0 , SCREENXRES, SCREENYRES); // &draw[0] is below &draw[1]
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//if (VMODE) // PAL
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//{
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// SetVideoMode(MODE_PAL);
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// disp[0].screen.y += 8; // add offset : 240 + 8 + 8 = 256
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// disp[1].screen.y += 8;
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//}
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//SetDispMask(1); // Display on screen
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setRGB0(&draw[0], 32, 32, 32); // set color for first draw area
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setRGB0(&draw[1], 32, 32, 32); // set color for second draw area
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draw[0].isbg = 1; // set mask for draw areas. 1 means repainting the area with the RGB color each frame
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draw[1].isbg = 1;
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PutDispEnv(&disp[db]); // set the disp and draw environnments
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PutDrawEnv(&draw[db]);
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FntLoad(960, 0); // Load font to vram at 960,0(+128)
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FntOpen(32, 32, 320-32, FONTSIZE, 0, 280 ); // FntOpen(x, y, width, height, black_bg, max. nbr. chars
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}
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void c_display(void)
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{
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//DrawSync(0); // Wait for all drawing to terminate
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//VSync(0); // Wait for the next vertical blank
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PutDispEnv(&disp[db]); // set alternate disp and draw environnments
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PutDrawEnv(&draw[db]);
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db = !db; // flip db value (0 or 1)
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}
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//void c_print(void)
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//{
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//FntPrint("Testin'"); // Send string to print stream
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//FntFlush(-1); // Draw printe stream
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//}
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//int c_main(void)
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//{
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// c_init(); // execute init()
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// while (1) // infinite loop
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// {
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//c_print();
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//c_display();
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//HelloMain();
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// }
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// return 0;
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//}
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@ -1,99 +0,0 @@
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.extern c_init
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.extern c_display
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.extern DrawSync
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.extern FntFlush
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.extern FntPrint
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.extern PutDispEnv
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.extern PutDrawEnv
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.extern ResetGraph
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.extern SetDefDispEnv
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.extern SetDefDrawEnv
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.extern SetDispMask
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.extern SetVideoMode
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.extern VSync
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.macro CallSetDefDispDrawEnv function,address,y
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la $a0,\address
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li $a1,0
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li $a2,\y
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li $a3,320
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li $t0,240
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sw $t0,16($sp)
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jal \function
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.endm
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.macro SetBackgroundRgb address,r,g,b
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# set params to items 26 27 28 of \address
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.endm
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.global main
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main:
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addi $sp,$sp,-4*6
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lw $a0,0($0)
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jal ResetGraph
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CallSetDefDispDrawEnv SetDefDispEnv,dispEnvs+0, 0
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CallSetDefDispDrawEnv SetDefDispEnv,dispEnvs+20,240
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CallSetDefDispDrawEnv SetDefDrawEnv,drawEnvs+0, 240
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CallSetDefDispDrawEnv SetDefDrawEnv,drawEnvs+92,0
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SetBackgroundRgb drawEnvs+0, 32,32,32
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SetBackgroundRgb drawEnvs+92,32,32,32
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jal c_init
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addi $sp,$sp,4*6
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MainLoop:
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#addi $sp,$sp,-4*5
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jal DrawSync
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jal VSync
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jal c_display
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la $a0,helloStr
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jal FntPrint
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# li $a0,70
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# li $a1,71
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# li $a2,72
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# li $a3,73
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# li $t0,120
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# sw $t0,16($sp)
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# jal Print12345
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jal FntFlush
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j MainLoop
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#addi $sp,$sp,4*5
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.data
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helloStr:
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.asciiz "Hello testin'!"
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.global displayIndex
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displayIndex:
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.byte 0
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# libgpu.h > DISPENV
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.global disp
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disp:
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dispEnvs:
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.align 2
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.space 40
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# libgpu.h > DRAWENV
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.global draw
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draw:
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drawEnvs:
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.align 2
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.space 184
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.extern DrawSync
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.extern FntFlush
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.extern FntLoad
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.extern FntOpen
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.extern FntPrint
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.extern PutDispEnv
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.extern PutDrawEnv
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.extern ResetGraph
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.extern SetDefDispEnv
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.extern SetDefDrawEnv
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.extern SetDispMask
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.extern VSync
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.macro FlipByteVariable address
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la $t0,\address
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#lb $t1,0($t0)
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#beq $t1,$0,__FlipByteVariable1__
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beq $t0,$0,__FlipByteVariable1__
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__FlipByteVariable0__:
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li $t1,0
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__FlipByteVariable1__:
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li $t1,1
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sb $t1,($t0)
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.endm
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.macro CallSetDefDispDrawEnv function,address,y
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la $a0,\address
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li $a1,0
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li $a2,\y
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li $a3,320
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li $t0,240
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sw $t0,16($sp)
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jal \function
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.endm
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.macro SetDisplayBackgroundRgb address,r,g,b
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li $t1,\r
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la $t0,\address+25
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sb $t1,0($t0)
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li $t1,\g
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la $t0,\address+26
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sb $t1,0($t0)
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li $t1,\b
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la $t0,\address+27
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sb $t1,0($t0)
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la $t0,\address+24
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li $t1,1
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sb $t1,0($t0)
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.endm
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.global main
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main:
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addi $sp,$sp,-4*6
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lw $a0,0($0)
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jal ResetGraph
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CallSetDefDispDrawEnv SetDefDispEnv,dispEnvs+0, 0
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CallSetDefDispDrawEnv SetDefDispEnv,dispEnvs+20,240
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CallSetDefDispDrawEnv SetDefDrawEnv,drawEnvs+0, 240
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CallSetDefDispDrawEnv SetDefDrawEnv,drawEnvs+92,0
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SetDisplayBackgroundRgb drawEnvs+0, 32,32,32
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SetDisplayBackgroundRgb drawEnvs+92,32,32,32
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la $a0,dispEnvs+0
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jal PutDispEnv
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la $a0,drawEnvs+0
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jal PutDrawEnv
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li $a0,960
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li $a1,0
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jal FntLoad
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li $a0,32
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li $a1,32
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li $a2,320-32
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li $a3,8*7
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li $t0,0
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sw $t0,16($sp)
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li $t1,280
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sw $t1,20($sp)
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jal FntOpen
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addi $sp,$sp,4*6
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MainLoop:
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jal DrawSync
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jal VSync
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la $a0,dispEnvs
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la $t0,displayIndex
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lb $t0,($t0)
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li $t1,20
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mult $t0,$t1
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mflo $t0
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add $a0,$a0,$t0
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jal PutDispEnv
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la $a0,drawEnvs
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la $t0,displayIndex
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lb $t0,($t0)
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li $t1,92
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mult $t0,$t1
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mflo $t0
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add $a0,$a0,$t0
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jal PutDrawEnv
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FlipByteVariable displayIndex
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la $a0,helloStr
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jal FntPrint
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jal FntFlush
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j MainLoop
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.data
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helloStr:
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.asciiz "Hello testin'!"
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displayIndex:
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.byte 0
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# libgpu.h > DISPENV
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dispEnvs:
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.align 2
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.space 2*20
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# libgpu.h > DRAWENV
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drawEnvs:
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.align 2
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.space 2*92
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@ -1,5 +1,5 @@
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TARGET = HelloWorld
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SRCS = HelloWorld2.s HelloWorld.c
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SRCS = HelloWorld.s
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include ../common.mk
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@ -10,7 +10,12 @@ Index of contents in this repo, might or might not always be complete...
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I will also try to credit everyone I can for all the contents listed, when my work is in great part based on someone else's.
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* Thanks to <https://github.com/PeterLemon/PSX/tree/master/Cube>:
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* [BouncyCubePs1](BouncyCubePs1)
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* [BouncyCubePs1.asm](BouncyCubePs1.asm)
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* Thanks to <https://github.com/ABelliqueux/nolibgs_hello_worlds/tree/main/hello_world> for the original code structure; all assembly code by me:
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* [HelloWorld-PS1-PsyQ.asm](HelloWorld-PS1-PsyQ.asm)
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(For now there's only PSX assembly things in here, this will soon change)
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## Related
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