Test w flag and print with the bytes in comments

.gitignore

@@ -2,3 +2,4 @@
 /.idea/
 /asm_files/*.bin
 /8086_family_Users_Manual_1_.pdf
+/decoder8086

Makefile

@@ -9,16 +9,16 @@ bin_files = $(patsubst %.asm,%.bin,$(asm_files))
 
 all: decode asm_files
 
-decode: decode.c decode.h lib.h
+decode: decoder8086.odin
-	$(CC) $(CFLAGS) $< -o $@
+	odin build decoder8086.odin -file
 
 asm_files: $(bin_files)
 %.bin: %.asm
 	nasm $< -o $@
 
 run: all
-	./decode
+	./decode8086
 
 clean:
-	rm -vf *.so *.o decode $(bin_files)
+	rm -vf *.so *.o decoder8086 $(bin_files)
 

decoder8086.odin

@@ -29,7 +29,7 @@ registers := [8]Register {
 main :: proc() {
     ax := registers[0]
     ax.value.full = 52428
-    f,err := os.open("./asm_files/01-01-38.bin")
+    f,err := os.open(len(os.args) > 1 ? os.args[1] : "./asm_files/01-01-38.bin")
     if err != os.ERROR_NONE {
         os.exit(1)
     }
@@ -45,18 +45,28 @@ main :: proc() {
     // mov dx, bx
 
     read_next := false
+    src_dst := true
+    is_word := false
+    prev :u8 = 0
+    fmt.println("bits 16\n")
     for b in data {
         if read_next {
             mod := (b & 0b11000000) >> 6
             reg := (b & 0b00111000) >> 3
             rm  := b & 0b00000111
-            fmt.printfln("mov %s, %s", registers[rm].fullname, registers[reg].fullname)
+            src_name := is_word ? registers[reg].fullname : registers[reg].bytename
+            dst_name := is_word ? registers[rm].fullname : registers[rm].bytename
+            fmt.printfln("mov %s, %s     ;; %b  %b", dst_name, src_name, prev, b)
             read_next = false
             continue
         }
         if b == 0b10001001 {
             read_next = true
-            continue
+            is_word = true
+        } else if b == 0b10001000 {
+            read_next = true
+            is_word = false
         }
+        prev = b
     }
 }

test_asm.sh

@@ -8,7 +8,7 @@ make asm_files > /dev/null
 
 for ASM_BIN in asm_files/*.bin;
 do
-    ./decode "$ASM_BIN" > output.asm 2> /dev/null
+    ./decoder8086 "$ASM_BIN" > output.asm 2> /dev/null
     nasm output.asm -o output.bin 2> /dev/null
     ASM_FILE=${ASM_BIN%.*}.asm
     if [ ! -e  output.bin ]; then