Revamped the opcode table, made the emulator more

efficient, and ported SuBEditor to C.

I revamped the opcode table to add another prefix bit
for the addressing mode, finally giving access to all
addresses, without wasting any bytes.

I made the stack based operations more efficient, by
sort of applying Duff's device to it.

And I ported SuBEditor to C, to make it easier for me
to figure out how to implement SuBAsm.

1 files changed, 36 insertions, 0 deletions

diff --git a/programs/c-ports/subeditor.h b/programs/c-ports/subeditor.h
new file mode 100644
index 0000000..f20088d
--- /dev/null
+++ b/programs/c-ports/subeditor.h
@@ -0,0 +1,36 @@
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+#define debug 0
+
+extern char *buffer;
+extern char *cmd_buf;
+
+extern uint8_t scr_row = 0;
+extern uint8_t scr_col = 0;
+extern uint8_t scr_trow = 0;
+extern uint8_t scr_tcol = 0;
+extern uint16_t scr_ptr = 0;
+
+extern uint8_t byte = 0;
+extern uint8_t mask = 0;
+
+extern uint8_t a = 0;
+extern uint8_t b = 0;
+extern uint8_t c = 0;
+extern uint8_t d = 0;
+extern uint8_t e = 0;
+extern uint8_t f = 0;
+
+extern uint8_t bitmask = 0;
+extern uint8_t bitabl[16];
+
+extern uint8_t scr_str = 0;
+extern uint8_t scr_end = 23;
+extern uint8_t wrapped = 0;
+
+extern void print_str(const char *str);
+int16_t str_cmp(const char *s0, uint16_t i, const char *s1, uint16_t j)
+extern void subasm();