uxn

commit 7938707cbe6960a74d3fdf587b5890d3b0663034
parent d609a6eed101d0e69eb9a5516b59cd6b1d31740e
Author: Jonne Ransijn <jonne@yyny.dev>
Date:   Sat,  7 Jun 2025 13:26:00 +0200

Add a `PAGE_SIZE` macro

Diffstat:
M
src/devices/system.c
 | 
16
++++++++--------
M
src/uxn.h
 | 
1
+
M
src/uxncli.c
 | 
2
+-
M
src/uxnemu.c
 | 
2
+-

4 files changed, 11 insertions(+), 10 deletions(-)
diff --git a/src/devices/system.c b/src/devices/system.c
@@ -31,9 +31,9 @@ system_load(Uint8 *ram, char *rom_path)
 {
 	FILE *f = fopen(rom_path, "rb");
 	if(f) {
-		int i = 0, l = fread(ram, 0x10000 - PAGE_PROGRAM, 1, f);
+		int i = 0, l = fread(ram, PAGE_SIZE - PAGE_PROGRAM, 1, f);
 		while(l && ++i < RAM_PAGES)
-			l = fread(ram + 0x10000 * i - PAGE_PROGRAM, 0x10000, 1, f);
+			l = fread(ram + PAGE_SIZE * i - PAGE_PROGRAM, PAGE_SIZE, 1, f);
 		fclose(f);
 	}
 	return !!f;
@@ -62,7 +62,7 @@ system_reboot(int soft)
 {
 	int i;
 	for(i = 0x0; i < 0x100; i++) uxn.dev[i] = 0;
-	for(i = soft ? 0x100 : 0; i < 0x10000; i++) uxn.ram[i] = 0;
+	for(i = soft ? 0x100 : 0; i < PAGE_SIZE; i++) uxn.ram[i] = 0;
 	uxn.wst.ptr = uxn.rst.ptr = 0;
 	return system_boot(uxn.ram, boot_path, 0);
 }
@@ -89,19 +89,19 @@ system_deo(Uint8 port)
 		Uint8 *aptr = uxn.ram + addr;
 		Uint16 length = PEEK2(aptr + 1);
 		if(uxn.ram[addr] == 0x0) {
-			unsigned int a = PEEK2(aptr + 3) * 0x10000 + PEEK2(aptr + 5);
+			unsigned int a = PEEK2(aptr + 3) * PAGE_SIZE + PEEK2(aptr + 5);
 			unsigned int b = a + length;
 			value = uxn.ram[addr + 7];
 			for(; a < b; uxn.ram[a++] = value);
 		} else if(uxn.ram[addr] == 0x1) {
-			unsigned int a = PEEK2(aptr + 3) * 0x10000 + PEEK2(aptr + 5);
+			unsigned int a = PEEK2(aptr + 3) * PAGE_SIZE + PEEK2(aptr + 5);
 			unsigned int b = a + length;
-			unsigned int c = PEEK2(aptr + 7) * 0x10000 + PEEK2(aptr + 9);
+			unsigned int c = PEEK2(aptr + 7) * PAGE_SIZE + PEEK2(aptr + 9);
 			for(; a < b; uxn.ram[c++] = uxn.ram[a++]);
 		} else if(uxn.ram[addr] == 0x2) {
-			unsigned int a = PEEK2(aptr + 3) * 0x10000 + PEEK2(aptr + 5);
+			unsigned int a = PEEK2(aptr + 3) * PAGE_SIZE + PEEK2(aptr + 5);
 			unsigned int b = a + length;
-			unsigned int c = PEEK2(aptr + 7) * 0x10000 + PEEK2(aptr + 9);
+			unsigned int c = PEEK2(aptr + 7) * PAGE_SIZE + PEEK2(aptr + 9);
 			unsigned int d = c + length;
 			for(; b >= a; uxn.ram[--d] = uxn.ram[--b]);
 		} else
diff --git a/src/uxn.h b/src/uxn.h
@@ -18,6 +18,7 @@ WITH REGARD TO THIS SOFTWARE.
 
 #define STEP_MAX 0x80000000
 #define PAGE_PROGRAM 0x0100
+#define PAGE_SIZE 0x10000
 
 typedef unsigned char Uint8;
 typedef signed char Sint8;
diff --git a/src/uxncli.c b/src/uxncli.c
@@ -51,7 +51,7 @@ main(int argc, char **argv)
 		return !fprintf(stdout, "Uxn(cli) - Varvara Emulator, 31 Jan 2025.\n");
 	else if(argc == 1)
 		return !fprintf(stdout, "usage: %s [-v] file.rom [args..]\n", argv[0]);
-	else if(!system_boot((Uint8 *)calloc(0x10000 * RAM_PAGES, sizeof(Uint8)), argv[i++], argc > 2))
+	else if(!system_boot((Uint8 *)calloc(PAGE_SIZE * RAM_PAGES, sizeof(Uint8)), argv[i++], argc > 2))
 		return !fprintf(stdout, "Could not load %s.\n", argv[i - 1]);
 	if(console_vector) {
 		console_arguments(i, argc, argv);
diff --git a/src/uxnemu.c b/src/uxnemu.c
@@ -482,7 +482,7 @@ main(int argc, char **argv)
 	rom_path = i == argc ? "boot.rom" : argv[i++];
 	if(!emu_init())
 		return system_error("Init", "Failed to initialize varvara.");
-	if(!system_boot((Uint8 *)calloc(0x10000 * RAM_PAGES + 1, sizeof(Uint8)), rom_path, argc > i))
+	if(!system_boot((Uint8 *)calloc(PAGE_SIZE * RAM_PAGES + 1, sizeof(Uint8)), rom_path, argc > i))
 		return system_error("usage:", "uxnemu [-v | -f | -2x | -3x] file.rom [args...]");
 	/* start */
 	console_arguments(i, argc, argv);