Implement BOCHS emulator break point

humbertocsjr · Oct 15, 2022 · a615b69 · a615b69
1 parent d95a3b9
commit a615b69
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diff --git a/BIN/LIB.BIN b/BIN/LIB.BIN
diff --git a/BIN/S86.COM b/BIN/S86.COM
diff --git a/BIN/T.COM b/BIN/T.COM
diff --git a/LIB/LIB.BIN b/LIB/LIB.BIN
diff --git a/LIB/LIB.S86 b/LIB/LIB.S86
@@ -62,6 +62,7 @@ rtlen:  dw      offset end      ; 0x0103 module length for mklib.t
 	jmp 	t_jmpstack		; 0x0192
 	jmp 	t_stackptr		; 0x0195
 	jmp 	t_instrptr		; 0x0198
+	jmp 	t_bochsbrk		; 0x019b
 
 
 ; Call frame layout
@@ -85,6 +86,12 @@ t_bpw:
 	mov     ax,2
 	ret
 
+; T.BOCHSBRK()
+; Magic breakpoint on BOCHS emulator
+t_bochsbrk:
+	xchg 	bx,bx
+	ret
+
 ; T.STACKPTR()
 ; Return stack pointer
 

diff --git a/SAMPLES/FIB.COM b/SAMPLES/FIB.COM
diff --git a/SAMPLES/HELLO.COM b/SAMPLES/HELLO.COM
diff --git a/SAMPLES/TEST.COM b/SAMPLES/TEST.COM
diff --git a/SRC/T.T b/SRC/T.T
@@ -1631,141 +1631,142 @@ emitlib() do var i, j, k, lib;
 	!LIBRARY!
 	[ 0x0080,
 	  packed [ 
-	    0xe9,0x2f,0x05,0x37,0x06,0x54,0x33,0x58,0xe9,0x90,0x00,0xe9,
-	    0xe9,0x01,0xe9,0x21,0x02,0xe9,0x67,0x02,0xe9,0xa0,0x02,0xe9,
-	    0xdb,0x02,0xe9,0xfc,0x02,0xe9,0x5c,0x03,0xe9,0xc2,0x03,0xe9,
-	    0xd5,0x03,0xe9,0xea,0x03,0xe9,0x4b,0x04,0xe9,0x61,0x04,0xe9,
-	    0x74,0x04,0xe9,0x7f,0x04,0xe9,0x8a,0x04,0xe9,0x95,0x04,0xe9,
-	    0xa0,0x04,0xe9,0xab,0x04,0xe9,0xe7,0x03,0xe9,0xb3,0x04,0xe9,
-	    0xbe,0x04,0xe9,0xc9,0x04,0xe9,0xd4,0x04,0xe9,0xb9,0x01,0xe9,
-	    0x06,0x02,0xe9,0x44,0x02,0xe9,0x6e,0x02,0xe9,0x42,0x01,0xe9,
-	    0x52,0x01,0xe9,0x65,0x01,0xe9,0x73,0x01,0xe9,0x86,0x01,0xe9,
-	    0x07,0x01,0xe9,0x10,0x01,0xe9,0x18,0x01,0xe9,0x21,0x01,0xe9,
-	    0x81,0x00,0xe9,0xaa,0x00,0xe9,0xc9,0x00 ],
+	    0xe9,0x35,0x05,0x3d,0x06,0x54,0x33,0x58,0xe9,0x93,0x00,0xe9,
+	    0xef,0x01,0xe9,0x27,0x02,0xe9,0x6d,0x02,0xe9,0xa6,0x02,0xe9,
+	    0xe1,0x02,0xe9,0x02,0x03,0xe9,0x62,0x03,0xe9,0xc8,0x03,0xe9,
+	    0xdb,0x03,0xe9,0xf0,0x03,0xe9,0x51,0x04,0xe9,0x67,0x04,0xe9,
+	    0x7a,0x04,0xe9,0x85,0x04,0xe9,0x90,0x04,0xe9,0x9b,0x04,0xe9,
+	    0xa6,0x04,0xe9,0xb1,0x04,0xe9,0xed,0x03,0xe9,0xb9,0x04,0xe9,
+	    0xc4,0x04,0xe9,0xcf,0x04,0xe9,0xda,0x04,0xe9,0xbf,0x01,0xe9,
+	    0x0c,0x02,0xe9,0x4a,0x02,0xe9,0x74,0x02,0xe9,0x48,0x01,0xe9,
+	    0x58,0x01,0xe9,0x6b,0x01,0xe9,0x79,0x01,0xe9,0x8c,0x01,0xe9,
+	    0x0d,0x01,0xe9,0x16,0x01,0xe9,0x1e,0x01,0xe9,0x27,0x01,0xe9,
+	    0x87,0x00,0xe9,0xb0,0x00,0xe9,0xcf,0x00 ],
 	  0x0080,
 	  packed [ 
-	    0xe9,0x4e,0x00,0xe9,0x60,0x00,0xe9,0x68,0x00,0xe9,0x68,0x01,
-	    0xe9,0x1a,0x00,0xe9,0x1a,0x00,0xe9,0x21,0x00,0xe9,0x07,0x00,
-	    0xe9,0x0b,0x00,0xb8,0x02,0x00,0xc3,0x89,0xe0,0x81,0xc0,0x02,
-	    0x00,0xc3,0x58,0x50,0xc3,0x9c,0x58,0xc3,0x55,0x89,0xe5,0x8b,
-	    0x46,0x04,0x50,0x9d,0x5d,0xc3,0x55,0x89,0xe5,0x1e,0x06,0x8b,
-	    0x46,0x08,0x8b,0x5e,0x06,0x8b,0x4e,0x04,0xfa,0x8e,0xd0,0x8e,
-	    0xd8,0x8e,0xc0,0x89,0xdc,0x50,0x51,0xfb,0xcb,0x55,0x89,0xe5,
-	    0x8b,0x76,0x08,0x8b,0x46,0x04,0x89,0x04,0x8b,0x46,0x06,0x89,
-	    0x44,0x02,0x31,0xc0,0x5d,0xc3,0x55,0x89,0xe5,0x8b,0x76,0x04,
-	    0x8b,0x44,0x02,0x5d,0xc3,0x55,0x89,0xe5,0x8b,0x76,0x04,0x8b,
-	    0x04,0x5d,0xc3,0x55,0x89,0xe5,0x8b,0x46 ],
+	    0xe9,0x54,0x00,0xe9,0x66,0x00,0xe9,0x6e,0x00,0xe9,0x6e,0x01,
+	    0xe9,0x20,0x00,0xe9,0x20,0x00,0xe9,0x27,0x00,0xe9,0x0d,0x00,
+	    0xe9,0x11,0x00,0xe9,0x04,0x00,0xb8,0x02,0x00,0xc3,0x87,0xdb,
+	    0xc3,0x89,0xe0,0x81,0xc0,0x02,0x00,0xc3,0x58,0x50,0xc3,0x9c,
+	    0x58,0xc3,0x55,0x89,0xe5,0x8b,0x46,0x04,0x50,0x9d,0x5d,0xc3,
+	    0x55,0x89,0xe5,0x1e,0x06,0x8b,0x46,0x08,0x8b,0x5e,0x06,0x8b,
+	    0x4e,0x04,0xfa,0x8e,0xd0,0x8e,0xd8,0x8e,0xc0,0x89,0xdc,0x50,
+	    0x51,0xfb,0xcb,0x55,0x89,0xe5,0x8b,0x76,0x08,0x8b,0x46,0x04,
+	    0x89,0x04,0x8b,0x46,0x06,0x89,0x44,0x02,0x31,0xc0,0x5d,0xc3,
+	    0x55,0x89,0xe5,0x8b,0x76,0x04,0x8b,0x44,0x02,0x5d,0xc3,0x55,
+	    0x89,0xe5,0x8b,0x76,0x04,0x8b,0x04,0x5d ],
 	  0x0080,
 	  packed [ 
-	    0x10,0xbe,0x1a,0x02,0x2e,0x88,0x04,0x8b,0x46,0x0e,0x8b,0x5e,
-	    0x0c,0x8b,0x4e,0x0a,0x8b,0x56,0x08,0x8b,0x76,0x06,0x8b,0x7e,
-	    0x04,0xcd,0x00,0x72,0x05,0x31,0xc0,0xe9,0x03,0x00,0xb8,0x01,
-	    0x00,0x5d,0xc3,0x55,0x89,0xe5,0x8b,0x46,0x10,0xbe,0x46,0x02,
-	    0x2e,0x88,0x04,0x8b,0x46,0x0e,0x8b,0x5e,0x0c,0x8b,0x4e,0x0a,
-	    0x8b,0x56,0x08,0x8b,0x76,0x06,0x8b,0x7e,0x04,0xcd,0x00,0x5d,
-	    0xc3,0x55,0x89,0xe5,0x8b,0x46,0x10,0xbe,0x68,0x02,0x2e,0x88,
+	    0xc3,0x55,0x89,0xe5,0x8b,0x46,0x10,0xbe,0x20,0x02,0x2e,0x88,
 	    0x04,0x8b,0x46,0x0e,0x8b,0x5e,0x0c,0x8b,0x4e,0x0a,0x8b,0x56,
-	    0x08,0x8b,0x76,0x06,0x8b,0x7e,0x04,0xcd,0x00,0x74,0x05,0x31,
+	    0x08,0x8b,0x76,0x06,0x8b,0x7e,0x04,0xcd,0x00,0x72,0x05,0x31,
 	    0xc0,0xe9,0x03,0x00,0xb8,0x01,0x00,0x5d,0xc3,0x55,0x89,0xe5,
-	    0x8b,0x56,0x06,0x8a,0x46,0x04,0xee,0x5d ],
+	    0x8b,0x46,0x10,0xbe,0x4c,0x02,0x2e,0x88,0x04,0x8b,0x46,0x0e,
+	    0x8b,0x5e,0x0c,0x8b,0x4e,0x0a,0x8b,0x56,0x08,0x8b,0x76,0x06,
+	    0x8b,0x7e,0x04,0xcd,0x00,0x5d,0xc3,0x55,0x89,0xe5,0x8b,0x46,
+	    0x10,0xbe,0x6e,0x02,0x2e,0x88,0x04,0x8b,0x46,0x0e,0x8b,0x5e,
+	    0x0c,0x8b,0x4e,0x0a,0x8b,0x56,0x08,0x8b,0x76,0x06,0x8b,0x7e,
+	    0x04,0xcd,0x00,0x74,0x05,0x31,0xc0,0xe9,0x03,0x00,0xb8,0x01,
+	    0x00,0x5d,0xc3,0x55,0x89,0xe5,0x8b,0x56 ],
 	  0x0080,
 	  packed [ 
-	    0xc3,0x55,0x89,0xe5,0x8b,0x56,0x04,0x31,0xc0,0xec,0x5d,0xc3,
-	    0x55,0x89,0xe5,0x8b,0x56,0x06,0x8b,0x46,0x04,0xef,0x5d,0xc3,
-	    0x55,0x89,0xe5,0x8b,0x56,0x04,0xed,0x5d,0xc3,0x55,0x89,0xe5,
-	    0x1e,0x8b,0x46,0x06,0x8e,0xd8,0x8b,0x5e,0x04,0x31,0xc0,0x8a,
-	    0x07,0x1f,0x5d,0xc3,0x55,0x89,0xe5,0x1e,0x8b,0x46,0x08,0x8e,
-	    0xd8,0x8b,0x5e,0x06,0x8a,0x46,0x04,0x88,0x07,0x31,0xc0,0x1f,
-	    0x5d,0xc3,0x55,0x89,0xe5,0x1e,0x8b,0x46,0x06,0x8e,0xd8,0x8b,
-	    0x5e,0x04,0x8b,0x07,0x1f,0x5d,0xc3,0x55,0x89,0xe5,0x1e,0x8b,
-	    0x46,0x08,0x8e,0xd8,0x8b,0x5e,0x06,0x8b,0x46,0x04,0x89,0x07,
-	    0x31,0xc0,0x1f,0x5d,0xc3,0x8c,0xc8,0xc3,0x8c,0xd0,0xc3,0x55,
-	    0x89,0xe5,0x8b,0x7e,0x04,0xfc,0xb0,0x0d ],
+	    0x06,0x8a,0x46,0x04,0xee,0x5d,0xc3,0x55,0x89,0xe5,0x8b,0x56,
+	    0x04,0x31,0xc0,0xec,0x5d,0xc3,0x55,0x89,0xe5,0x8b,0x56,0x06,
+	    0x8b,0x46,0x04,0xef,0x5d,0xc3,0x55,0x89,0xe5,0x8b,0x56,0x04,
+	    0xed,0x5d,0xc3,0x55,0x89,0xe5,0x1e,0x8b,0x46,0x06,0x8e,0xd8,
+	    0x8b,0x5e,0x04,0x31,0xc0,0x8a,0x07,0x1f,0x5d,0xc3,0x55,0x89,
+	    0xe5,0x1e,0x8b,0x46,0x08,0x8e,0xd8,0x8b,0x5e,0x06,0x8a,0x46,
+	    0x04,0x88,0x07,0x31,0xc0,0x1f,0x5d,0xc3,0x55,0x89,0xe5,0x1e,
+	    0x8b,0x46,0x06,0x8e,0xd8,0x8b,0x5e,0x04,0x8b,0x07,0x1f,0x5d,
+	    0xc3,0x55,0x89,0xe5,0x1e,0x8b,0x46,0x08,0x8e,0xd8,0x8b,0x5e,
+	    0x06,0x8b,0x46,0x04,0x89,0x07,0x31,0xc0,0x1f,0x5d,0xc3,0x8c,
+	    0xc8,0xc3,0x8c,0xd0,0xc3,0x55,0x89,0xe5 ],
 	  0x0080,
 	  packed [ 
-	    0xaa,0xb0,0x0a,0xaa,0x30,0xc0,0xaa,0x8b,0x46,0x04,0x5d,0xc3,
-	    0x55,0x89,0xe5,0x1e,0x06,0x8b,0x46,0x0c,0x8e,0xd8,0x8b,0x46,
-	    0x0a,0x50,0x8b,0x46,0x08,0x8e,0xc0,0x8b,0x46,0x06,0x50,0x8b,
-	    0x46,0x04,0x50,0xe8,0x08,0x00,0x81,0xc4,0x06,0x00,0x07,0x1f,
-	    0x5d,0xc3,0x55,0x89,0xe5,0x8b,0x7e,0x08,0x8b,0x76,0x06,0x8b,
-	    0x4e,0x04,0x39,0xfe,0x75,0x04,0x31,0xc0,0xeb,0x14,0xff,0xc1,
-	    0xfc,0xf3,0xa6,0x09,0xc9,0x75,0x04,0x31,0xc0,0xeb,0x07,0x8a,
-	    0x45,0xff,0x2a,0x44,0xff,0x98,0x5d,0xc3,0x55,0x89,0xe5,0x1e,
-	    0x06,0x8b,0x46,0x0c,0x8e,0xc0,0x8b,0x7e,0x0a,0x8b,0x46,0x08,
-	    0x8e,0xd8,0x8b,0x76,0x06,0x8b,0x4e,0x04,0xfc,0xf3,0xa4,0x07,
-	    0x1f,0x5d,0xc3,0x55,0x89,0xe5,0x8b,0x7e ],
+	    0x8b,0x7e,0x04,0xfc,0xb0,0x0d,0xaa,0xb0,0x0a,0xaa,0x30,0xc0,
+	    0xaa,0x8b,0x46,0x04,0x5d,0xc3,0x55,0x89,0xe5,0x1e,0x06,0x8b,
+	    0x46,0x0c,0x8e,0xd8,0x8b,0x46,0x0a,0x50,0x8b,0x46,0x08,0x8e,
+	    0xc0,0x8b,0x46,0x06,0x50,0x8b,0x46,0x04,0x50,0xe8,0x08,0x00,
+	    0x81,0xc4,0x06,0x00,0x07,0x1f,0x5d,0xc3,0x55,0x89,0xe5,0x8b,
+	    0x7e,0x08,0x8b,0x76,0x06,0x8b,0x4e,0x04,0x39,0xfe,0x75,0x04,
+	    0x31,0xc0,0xeb,0x14,0xff,0xc1,0xfc,0xf3,0xa6,0x09,0xc9,0x75,
+	    0x04,0x31,0xc0,0xeb,0x07,0x8a,0x45,0xff,0x2a,0x44,0xff,0x98,
+	    0x5d,0xc3,0x55,0x89,0xe5,0x1e,0x06,0x8b,0x46,0x0c,0x8e,0xc0,
+	    0x8b,0x7e,0x0a,0x8b,0x46,0x08,0x8e,0xd8,0x8b,0x76,0x06,0x8b,
+	    0x4e,0x04,0xfc,0xf3,0xa4,0x07,0x1f,0x5d ],
 	  0x0080,
 	  packed [ 
-	    0x08,0x8b,0x76,0x06,0x8b,0x4e,0x04,0xfc,0x39,0xf7,0x74,0x0d,
-	    0x72,0x09,0xfd,0x01,0xce,0x01,0xcf,0xff,0xce,0xff,0xcf,0xf3,
-	    0xa4,0x5d,0x31,0xc0,0xc3,0x55,0x89,0xe5,0x06,0x8b,0x46,0x0a,
-	    0x8e,0xc0,0x8b,0x7e,0x08,0x8b,0x46,0x06,0x8b,0x4e,0x04,0xfc,
-	    0xf3,0xaa,0x07,0x5d,0x31,0xc0,0xc3,0x55,0x89,0xe5,0x8b,0x7e,
-	    0x08,0x8b,0x46,0x06,0x8b,0x4e,0x04,0xfc,0xf3,0xaa,0x5d,0x31,
-	    0xc0,0xc3,0x55,0x89,0xe5,0x1e,0x8b,0x46,0x0a,0x8e,0xd8,0x8b,
-	    0x7e,0x08,0x89,0xfa,0x8b,0x46,0x06,0x8b,0x4e,0x04,0xff,0xc1,
-	    0xfc,0xf2,0xae,0x09,0xc9,0x74,0x08,0x89,0xf8,0x29,0xd0,0xff,
-	    0xc8,0xeb,0x03,0xb8,0xff,0xff,0x1f,0x5d,0xc3,0x55,0x89,0xe5,
-	    0x8b,0x7e,0x08,0x89,0xfa,0x8b,0x46,0x06 ],
+	    0xc3,0x55,0x89,0xe5,0x8b,0x7e,0x08,0x8b,0x76,0x06,0x8b,0x4e,
+	    0x04,0xfc,0x39,0xf7,0x74,0x0d,0x72,0x09,0xfd,0x01,0xce,0x01,
+	    0xcf,0xff,0xce,0xff,0xcf,0xf3,0xa4,0x5d,0x31,0xc0,0xc3,0x55,
+	    0x89,0xe5,0x06,0x8b,0x46,0x0a,0x8e,0xc0,0x8b,0x7e,0x08,0x8b,
+	    0x46,0x06,0x8b,0x4e,0x04,0xfc,0xf3,0xaa,0x07,0x5d,0x31,0xc0,
+	    0xc3,0x55,0x89,0xe5,0x8b,0x7e,0x08,0x8b,0x46,0x06,0x8b,0x4e,
+	    0x04,0xfc,0xf3,0xaa,0x5d,0x31,0xc0,0xc3,0x55,0x89,0xe5,0x1e,
+	    0x8b,0x46,0x0a,0x8e,0xd8,0x8b,0x7e,0x08,0x89,0xfa,0x8b,0x46,
+	    0x06,0x8b,0x4e,0x04,0xff,0xc1,0xfc,0xf2,0xae,0x09,0xc9,0x74,
+	    0x08,0x89,0xf8,0x29,0xd0,0xff,0xc8,0xeb,0x03,0xb8,0xff,0xff,
+	    0x1f,0x5d,0xc3,0x55,0x89,0xe5,0x8b,0x7e ],
 	  0x0080,
 	  packed [ 
-	    0x8b,0x4e,0x04,0xff,0xc1,0xfc,0xf2,0xae,0x09,0xc9,0x74,0x08,
-	    0x89,0xf8,0x29,0xd0,0xff,0xc8,0xeb,0x03,0xb8,0xff,0xff,0x5d,
-	    0xc3,0x55,0x89,0xe5,0x8b,0x4e,0x08,0xff,0xc9,0xbe,0x82,0x00,
-	    0xfc,0xff,0xce,0xac,0x80,0xf8,0x20,0x74,0xfa,0x80,0xf8,0x09,
-	    0x74,0xf5,0x80,0xf8,0x0d,0x75,0x05,0xb8,0xff,0xff,0xeb,0x3e,
-	    0x09,0xc9,0x74,0x14,0xff,0xc9,0xac,0x80,0xf8,0x20,0x74,0xdd,
-	    0x80,0xf8,0x09,0x74,0xd8,0x80,0xf8,0x0d,0x74,0xd3,0xeb,0xee,
-	    0x8b,0x7e,0x06,0x8b,0x4e,0x04,0x31,0xdb,0xff,0xc3,0x39,0xcb,
-	    0x73,0x13,0xaa,0xac,0x80,0xf8,0x20,0x74,0x0c,0x80,0xf8,0x09,
-	    0x74,0x07,0x80,0xf8,0x0d,0x74,0x02,0xeb,0xe7,0x31,0xc0,0xaa,
-	    0x89,0xd8,0x5d,0xc3,0x55,0x89,0xe5,0x8b ],
+	    0x08,0x89,0xfa,0x8b,0x46,0x06,0x8b,0x4e,0x04,0xff,0xc1,0xfc,
+	    0xf2,0xae,0x09,0xc9,0x74,0x08,0x89,0xf8,0x29,0xd0,0xff,0xc8,
+	    0xeb,0x03,0xb8,0xff,0xff,0x5d,0xc3,0x55,0x89,0xe5,0x8b,0x4e,
+	    0x08,0xff,0xc9,0xbe,0x82,0x00,0xfc,0xff,0xce,0xac,0x80,0xf8,
+	    0x20,0x74,0xfa,0x80,0xf8,0x09,0x74,0xf5,0x80,0xf8,0x0d,0x75,
+	    0x05,0xb8,0xff,0xff,0xeb,0x3e,0x09,0xc9,0x74,0x14,0xff,0xc9,
+	    0xac,0x80,0xf8,0x20,0x74,0xdd,0x80,0xf8,0x09,0x74,0xd8,0x80,
+	    0xf8,0x0d,0x74,0xd3,0xeb,0xee,0x8b,0x7e,0x06,0x8b,0x4e,0x04,
+	    0x31,0xdb,0xff,0xc3,0x39,0xcb,0x73,0x13,0xaa,0xac,0x80,0xf8,
+	    0x20,0x74,0x0c,0x80,0xf8,0x09,0x74,0x07,0x80,0xf8,0x0d,0x74,
+	    0x02,0xeb,0xe7,0x31,0xc0,0xaa,0x89,0xd8 ],
 	  0x0080,
 	  packed [ 
-	    0x46,0x04,0x81,0xf8,0x01,0x00,0x75,0x11,0xb8,0x00,0x3c,0x8b,
-	    0x56,0x06,0x31,0xc9,0xcd,0x21,0x73,0x29,0xb8,0xff,0xff,0xeb,
-	    0x4a,0x81,0xf8,0x00,0x00,0x74,0x0e,0x81,0xf8,0x03,0x00,0x74,
-	    0x05,0xb8,0xff,0xff,0xeb,0x39,0xb8,0x02,0x00,0x81,0xc8,0x00,
-	    0x3d,0x8b,0x56,0x06,0xcd,0x21,0x73,0x05,0xb8,0xff,0xff,0xeb,
-	    0x26,0x81,0xf8,0x00,0x00,0x7d,0x05,0xb8,0xff,0xff,0xeb,0x1b,
-	    0x8b,0x5e,0x04,0x81,0xfb,0x03,0x00,0x75,0x12,0x50,0x89,0xc3,
-	    0xb8,0x02,0x42,0x31,0xc9,0x31,0xd2,0xcd,0x21,0x58,0x73,0x03,
-	    0xb8,0xff,0xff,0x5d,0xc3,0x55,0x89,0xe5,0x8b,0x5e,0x04,0xb8,
-	    0x00,0x3e,0xcd,0x21,0x73,0x05,0xb8,0xff,0xff,0xeb,0x02,0x31,
-	    0xc0,0x5d,0xc3,0x55,0x89,0xe5,0xb8,0x00 ],
+	    0x5d,0xc3,0x55,0x89,0xe5,0x8b,0x46,0x04,0x81,0xf8,0x01,0x00,
+	    0x75,0x11,0xb8,0x00,0x3c,0x8b,0x56,0x06,0x31,0xc9,0xcd,0x21,
+	    0x73,0x29,0xb8,0xff,0xff,0xeb,0x4a,0x81,0xf8,0x00,0x00,0x74,
+	    0x0e,0x81,0xf8,0x03,0x00,0x74,0x05,0xb8,0xff,0xff,0xeb,0x39,
+	    0xb8,0x02,0x00,0x81,0xc8,0x00,0x3d,0x8b,0x56,0x06,0xcd,0x21,
+	    0x73,0x05,0xb8,0xff,0xff,0xeb,0x26,0x81,0xf8,0x00,0x00,0x7d,
+	    0x05,0xb8,0xff,0xff,0xeb,0x1b,0x8b,0x5e,0x04,0x81,0xfb,0x03,
+	    0x00,0x75,0x12,0x50,0x89,0xc3,0xb8,0x02,0x42,0x31,0xc9,0x31,
+	    0xd2,0xcd,0x21,0x58,0x73,0x03,0xb8,0xff,0xff,0x5d,0xc3,0x55,
+	    0x89,0xe5,0x8b,0x5e,0x04,0xb8,0x00,0x3e,0xcd,0x21,0x73,0x05,
+	    0xb8,0xff,0xff,0xeb,0x02,0x31,0xc0,0x5d ],
 	  0x0080,
 	  packed [ 
-	    0x3f,0x8b,0x5e,0x08,0x8b,0x56,0x06,0x8b,0x4e,0x04,0xcd,0x21,
-	    0x73,0x03,0xb8,0xff,0xff,0x5d,0xc3,0x55,0x89,0xe5,0xb8,0x00,
-	    0x40,0x8b,0x5e,0x08,0x8b,0x56,0x06,0x8b,0x4e,0x04,0xcd,0x21,
-	    0x73,0x03,0xb8,0xff,0xff,0x5d,0xc3,0x55,0x89,0xe5,0x8b,0x56,
-	    0x06,0x31,0xc9,0x8b,0x46,0x04,0x09,0xc0,0x75,0x05,0xb8,0x00,
-	    0x42,0xeb,0x28,0x81,0xf8,0x01,0x00,0x75,0x06,0xb8,0x01,0x42,
-	    0xe9,0x1c,0x00,0x81,0xf8,0x02,0x00,0x75,0x09,0xb8,0x02,0x42,
-	    0xf7,0xda,0xff,0xc9,0xeb,0x0d,0x81,0xf8,0x03,0x00,0x75,0x12,
-	    0xb8,0x01,0x42,0xf7,0xda,0xff,0xc9,0x8b,0x5e,0x08,0xcd,0x21,
-	    0x72,0x04,0x31,0xc0,0xeb,0x03,0xb8,0xff,0xff,0x5d,0xc3,0x55,
-	    0x89,0xe5,0xb8,0x00,0x56,0x8b,0x56,0x06 ],
+	    0xc3,0x55,0x89,0xe5,0xb8,0x00,0x3f,0x8b,0x5e,0x08,0x8b,0x56,
+	    0x06,0x8b,0x4e,0x04,0xcd,0x21,0x73,0x03,0xb8,0xff,0xff,0x5d,
+	    0xc3,0x55,0x89,0xe5,0xb8,0x00,0x40,0x8b,0x5e,0x08,0x8b,0x56,
+	    0x06,0x8b,0x4e,0x04,0xcd,0x21,0x73,0x03,0xb8,0xff,0xff,0x5d,
+	    0xc3,0x55,0x89,0xe5,0x8b,0x56,0x06,0x31,0xc9,0x8b,0x46,0x04,
+	    0x09,0xc0,0x75,0x05,0xb8,0x00,0x42,0xeb,0x28,0x81,0xf8,0x01,
+	    0x00,0x75,0x06,0xb8,0x01,0x42,0xe9,0x1c,0x00,0x81,0xf8,0x02,
+	    0x00,0x75,0x09,0xb8,0x02,0x42,0xf7,0xda,0xff,0xc9,0xeb,0x0d,
+	    0x81,0xf8,0x03,0x00,0x75,0x12,0xb8,0x01,0x42,0xf7,0xda,0xff,
+	    0xc9,0x8b,0x5e,0x08,0xcd,0x21,0x72,0x04,0x31,0xc0,0xeb,0x03,
+	    0xb8,0xff,0xff,0x5d,0xc3,0x55,0x89,0xe5 ],
 	  0x0080,
 	  packed [ 
-	    0x8b,0x7e,0x04,0xcd,0x21,0x73,0x05,0xb8,0xff,0xff,0xeb,0x02,
-	    0x31,0xc0,0x5d,0xc3,0x55,0x89,0xe5,0xb8,0x00,0x41,0x8b,0x56,
-	    0x04,0xcd,0x21,0x73,0x05,0xb8,0xff,0xff,0xeb,0x02,0x31,0xc0,
-	    0x5d,0xc3,0x5e,0x5b,0x31,0xd2,0x39,0xc3,0x75,0x02,0xff,0xca,
-	    0x89,0xd0,0xff,0xe6,0x5e,0x5b,0x31,0xd2,0x39,0xc3,0x74,0x02,
+	    0xb8,0x00,0x56,0x8b,0x56,0x06,0x8b,0x7e,0x04,0xcd,0x21,0x73,
+	    0x05,0xb8,0xff,0xff,0xeb,0x02,0x31,0xc0,0x5d,0xc3,0x55,0x89,
+	    0xe5,0xb8,0x00,0x41,0x8b,0x56,0x04,0xcd,0x21,0x73,0x05,0xb8,
+	    0xff,0xff,0xeb,0x02,0x31,0xc0,0x5d,0xc3,0x5e,0x5b,0x31,0xd2,
+	    0x39,0xc3,0x75,0x02,0xff,0xca,0x89,0xd0,0xff,0xe6,0x5e,0x5b,
+	    0x31,0xd2,0x39,0xc3,0x74,0x02,0xff,0xca,0x89,0xd0,0xff,0xe6,
+	    0x5e,0x5b,0x31,0xd2,0x39,0xc3,0x7d,0x02,0xff,0xca,0x89,0xd0,
+	    0xff,0xe6,0x5e,0x5b,0x31,0xd2,0x39,0xc3,0x7e,0x02,0xff,0xca,
+	    0x89,0xd0,0xff,0xe6,0x5e,0x5b,0x31,0xd2,0x39,0xc3,0x7f,0x02,
 	    0xff,0xca,0x89,0xd0,0xff,0xe6,0x5e,0x5b,0x31,0xd2,0x39,0xc3,
-	    0x7d,0x02,0xff,0xca,0x89,0xd0,0xff,0xe6,0x5e,0x5b,0x31,0xd2,
-	    0x39,0xc3,0x7e,0x02,0xff,0xca,0x89,0xd0,0xff,0xe6,0x5e,0x5b,
-	    0x31,0xd2,0x39,0xc3,0x7f,0x02,0xff,0xca,0x89,0xd0,0xff,0xe6,
-	    0x5e,0x5b,0x31,0xd2,0x39,0xc3,0x7c,0x02,0xff,0xca,0x89,0xd0,
-	    0xff,0xe6,0x5e,0x5b,0x31,0xd2,0x39,0xc3 ],
-	  0x0037,
+	    0x7c,0x02,0xff,0xca,0x89,0xd0,0xff,0xe6 ],
+	  0x003d,
 	  packed [ 
-	    0x73,0x02,0xff,0xca,0x89,0xd0,0xff,0xe6,0x5e,0x5b,0x31,0xd2,
-	    0x39,0xc3,0x76,0x02,0xff,0xca,0x89,0xd0,0xff,0xe6,0x5e,0x5b,
-	    0x31,0xd2,0x39,0xc3,0x77,0x02,0xff,0xca,0x89,0xd0,0xff,0xe6,
-	    0x5e,0x5b,0x31,0xd2,0x39,0xc3,0x72,0x02,0xff,0xca,0x89,0xd0,
-	    0xff,0xe6,0xb8,0xfe,0xff,0x89,0xc4 ],
+	    0x5e,0x5b,0x31,0xd2,0x39,0xc3,0x73,0x02,0xff,0xca,0x89,0xd0,
+	    0xff,0xe6,0x5e,0x5b,0x31,0xd2,0x39,0xc3,0x76,0x02,0xff,0xca,
+	    0x89,0xd0,0xff,0xe6,0x5e,0x5b,0x31,0xd2,0x39,0xc3,0x77,0x02,
+	    0xff,0xca,0x89,0xd0,0xff,0xe6,0x5e,0x5b,0x31,0xd2,0x39,0xc3,
+	    0x72,0x02,0xff,0xca,0x89,0xd0,0xff,0xe6,0xb8,0xfe,0xff,0x89,
+	    0xc4 ],
 	  0 ];
 	!LIBRARY!
 	i := 0;
@@ -1995,6 +1996,7 @@ init(p) do var i, b::10;
 	builtin("t.jmpstack", 3,0x0192);
 	builtin("t.stackptr", 0,0x0195);
 	builtin("t.instrptr", 0,0x0198);
+	builtin("t.bochsbrk", 0,0x019b);
 	emitlib();
 end
 

diff --git a/SRC/TSOURCE.T b/SRC/TSOURCE.T
@@ -1854,6 +1854,7 @@ init(p) do var i, b::10;
 	builtin("t.jmpstack", 3,0x0192);
 	builtin("t.stackptr", 0,0x0195);
 	builtin("t.instrptr", 0,0x0198);
+	builtin("t.bochsbrk", 0,0x019b);
 	emitlib();
 end
 

diff --git a/TOOLS/DOSFILE.COM b/TOOLS/DOSFILE.COM
diff --git a/TOOLS/MKLIB.COM b/TOOLS/MKLIB.COM