Add 8080-to-8086 translation

include/dos_com.ini

@@ -0,0 +1,25 @@
+;a COM program for DOS
+[compilation]
+arch=i8086
+encoding=ascii
+modules=default_panic,stdlib,pc_dos
+
+[allocation]
+segment_default_start=$100
+segment_default_datastart=after_code
+segment_default_end=$ffff
+; TODO: actual end?
+
+[define]
+IBM_PC=1
+WIDESCREEN=1
+KEYBOARD=1
+JOYSTICKS=0
+HAS_BITMAP_MODE=0
+
+[output]
+style=single
+format=allocated
+extension=com
+
+

include/pc_dos.mfk

@@ -0,0 +1,37 @@
+#pragma intel_syntax
+
+import default_readword
+
+inline asm void exit() {
+    [$b4, 0, $cd, $21]
+	? ret
+}
+inline asm void putchar (byte e) {
+    [$b4, 2, $cd, $21]
+	? ret
+}
+
+inline void new_line() {
+	putchar(13)
+	putchar(10)
+}
+
+inline asm byte getchar() {
+    [$b4, 1, $cd, $21]
+	? ret
+}
+
+array __readline_out[83]
+const pointer readline_out = __readline_out.addr + 2
+
+pointer readline() {
+     __readline_out[0] = 81
+     __readline_out[1] = 0
+     asm {
+        ? lxi d, __readline_out.addr
+        [$b4, $0a, $cd, $21]
+     }
+     __readline_out[__readline_out[1] + 2] = 0
+     new_line()
+     return __readline_out + 2
+}

include/random.mfk

@@ -5,6 +5,9 @@ word rand_seed
 import random_6502
 #elseif ARCH_I80
 import random_i80
+#elseif ARCH_X86
+#warn 8086 is a partially supported architecture
+import random_i80
 #else
 #warn Unsupported architecture
 #endif

include/stdlib.mfk

@@ -4,8 +4,9 @@
 import stdlib_6502
 #elseif ARCH_I80
 import stdlib_i80
-#else
-#warn Unsupported architecture
+#elseif ARCH_X86
+#warn 8086 is a partially supported architecture
+import stdlib_i80
 #endif
 
 #if PAL && NTSC