Remove runbin

It's not used

emul/.gitignore

@@ -1,8 +1,6 @@
 /forth/stage1
 /forth/stage1dbg
 /forth/stage2
-/forth/stage2dbg
 /forth/forth
-/runbin/runbin
 /*/*-bin.h
 /*/*.bin

emul/Makefile

@@ -1,4 +1,4 @@
-TARGETS = runbin/runbin forth/forth
+TARGETS = forth/forth
 BIN2C = ../tools/bin2c
 # Those Forth source files are in a particular order
 BOOTSRCS = ./forth/conf.fs \
@@ -58,9 +58,6 @@ forth/stage2: forth/stage.c $(OBJS) forth/forth1-bin.h
 forth/forth: forth/forth.c $(OBJS) forth/forth1-bin.h 
 	$(CC) forth/forth.c $(OBJS) -o $@
 
-runbin/runbin: runbin/runbin.c $(OBJS)
-	$(CC) runbin/runbin.c $(OBJS) -o $@
-
 libz80/libz80.o: libz80/z80.c
 	$(MAKE) -C libz80/codegen opcodes
 	$(CC) -Wall -ansi -g -c -o libz80/libz80.o libz80/z80.c

emul/README.md

@@ -49,14 +49,6 @@ the power of a full Forth intepreter, including an assembler, to assemble
 Normally, running this step should yield the exact same `boot.bin` and
 `z80c.bin` as before, unless of course you've changed the source.
 
-## runbin
-
-This is a very simple tool that reads binary z80 code from stdin, loads it in
-memory starting at address 0 and then run the code until it halts. The exit
-code of the program is the value of `A` when the program halts.
-
-This is used for unit tests.
-
 ## Problems?
 
 If the libz80-wrapped zasm executable works badly (hangs, spew garbage, etc.),

emul/runbin/runbin.c

@@ -1,33 +0,0 @@
-#include <stdint.h>
-#include <stdio.h>
-#include "../emul.h"
-
-/* runbin loads binary from stdin directly in memory address 0 then runs it
- * until it halts. The return code is the value of the register A at halt time.
- */
-
-static void iowr_stderr(uint8_t val)
-{
-    fputc(val, stderr);
-}
-
-int main()
-{
-    Machine *m = emul_init();
-    m->iowr[0] = iowr_stderr;
-    // read stdin in mem
-    int i = 0;
-    int c = getchar();
-    while (c != EOF) {
-        m->mem[i] = c & 0xff;
-        i++;
-        c = getchar();
-    }
-    if (!i) {
-        fprintf(stderr, "No input, aborting\n");
-        return 1;
-    }
-    emul_loop();
-    return m->cpu.R1.br.A;
-}
-