changeset 442:3574cdf8705a

Merge branch 'master' into loader Conflicts: cp/Makefile cp/include/loader.h cp/ipl/loader.c cp/scripts/Makefile.commands Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
author Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
date Sat, 26 Feb 2011 17:15:15 -0500
parents dc0825c5ca65 (current diff) 00b487fbf5d7 (diff)
children 7f7bb454982b
files cp/Makefile cp/include/ebcdic.h cp/nucleus/ebcdic.c cp/scripts/Makefile.commands loader/loader_asm.S
diffstat 9 files changed, 224 insertions(+), 222 deletions(-) [+]
line wrap: on
line diff
--- a/cp/Makefile	Fri Jun 18 20:41:48 2010 -0400
+++ b/cp/Makefile	Sat Feb 26 17:15:15 2011 -0500
@@ -24,14 +24,14 @@
 NUCLEUSCFLAGS=-include include/nucleus.h
 LDFLAGS=-m elf64_s390
 
-LIBS=clock digest string
+LIBS=clock digest string ebcdic
 
 export AS CC LD OBJCOPY
 export MAKEFLAGS CFLAGS NUCLEUSCFLAGS LDFLAGS
 
 TOP_DIRS=nucleus/ mm/ fs/ drivers/ shell/
 
-.PHONY: all build clean mrproper cleanup hvfclean tags
+.PHONY: all build clean mrproper cleanup tags
 .PHONY: $(TOP_DIRS)
 
 include scripts/Makefile.commands
--- a/cp/include/ebcdic.h	Fri Jun 18 20:41:48 2010 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,41 +0,0 @@
-/*
- * (C) Copyright 2007-2010  Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
- *
- * This file is released under the GPLv2.  See the COPYING file for more
- * details.
- */
-
-#ifndef __EBCDIC_H
-#define __EBCDIC_H
-
-extern u8 ascii2ebcdic_table[256];
-extern u8 ebcdic2ascii_table[256];
-
-/*
- * Generic translate buffer function.
- */
-static inline void __translate(u8 *buf, int len, const u8 *table)
-{
-	asm volatile(
-		"	sgr	%%r0,%%r0\n"		/* test byte = 0 */
-		"	la	%%r2,0(%0)\n"		/* buffer */
-		"	lgr	%%r3,%2\n"		/* length */
-		"	la	%%r4,0(%1)\n"		/* table */
-		"0:	tre	%%r2,%%r4\n"
-		"	brc	1,0b\n"
-		: /* output */
-		: /* input */
-		  "a" (buf),
-		  "a" (table),
-		  "d" (len)
-		: /* clobbered */
-		  "cc", "r0", "r2", "r3", "r4"
-	);
-}
-
-#define ascii2ebcdic(buf, len)	\
-			__translate((buf), (len), ascii2ebcdic_table)
-#define ebcdic2ascii(buf, len)  \
-			__translate((buf), (len), ebcdic2ascii_table)
-
-#endif
--- a/cp/nucleus/Makefile	Fri Jun 18 20:41:48 2010 -0400
+++ b/cp/nucleus/Makefile	Sat Feb 26 17:15:15 2011 -0500
@@ -1,2 +1,2 @@
-objs-nucleus := init.o io.o printf.o ebcdic.o int.o ext.o svc.o pgm.o \
-	spinlock.o mutex.o sched.o
+objs-nucleus := init.o io.o printf.o int.o ext.o svc.o pgm.o spinlock.o \
+	mutex.o sched.o
--- a/cp/nucleus/ebcdic.c	Fri Jun 18 20:41:48 2010 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,161 +0,0 @@
-/*
- * (C) Copyright 2007-2010  Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
- *
- * This file is released under the GPLv2.  See the COPYING file for more
- * details.
- */
-
-#include <ebcdic.h>
-
-/*
- * Tables taken from Linux's arch/s390/kernel/ebcdic.c
- */
-
-/*
- * ASCII (IBM PC 437)  -> EBCDIC 037
- */
-u8 ascii2ebcdic_table[256] =
-{
- /*00 NUL   SOH   STX   ETX   EOT   ENQ   ACK   BEL */
-     0x00, 0x01, 0x02, 0x03, 0x37, 0x2D, 0x2E, 0x2F,
- /*08  BS    HT    LF    VT    FF    CR    SO    SI */
- /*              ->NL                               */
-     0x16, 0x05, 0x15, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
- /*10 DLE   DC1   DC2   DC3   DC4   NAK   SYN   ETB */
-     0x10, 0x11, 0x12, 0x13, 0x3C, 0x3D, 0x32, 0x26,
- /*18 CAN    EM   SUB   ESC    FS    GS    RS    US */
- /*                               ->IGS ->IRS ->IUS */
-     0x18, 0x19, 0x3F, 0x27, 0x22, 0x1D, 0x1E, 0x1F,
- /*20  SP     !     "     #     $     %     &     ' */
-     0x40, 0x5A, 0x7F, 0x7B, 0x5B, 0x6C, 0x50, 0x7D,
- /*28   (     )     *     +     ,     -    .      / */
-     0x4D, 0x5D, 0x5C, 0x4E, 0x6B, 0x60, 0x4B, 0x61,
- /*30   0     1     2     3     4     5     6     7 */
-     0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
- /*38   8     9     :     ;     <     =     >     ? */
-     0xF8, 0xF9, 0x7A, 0x5E, 0x4C, 0x7E, 0x6E, 0x6F,
- /*40   @     A     B     C     D     E     F     G */
-     0x7C, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
- /*48   H     I     J     K     L     M     N     O */
-     0xC8, 0xC9, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6,
- /*50   P     Q     R     S     T     U     V     W */
-     0xD7, 0xD8, 0xD9, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6,
- /*58   X     Y     Z     [     \     ]     ^     _ */
-     0xE7, 0xE8, 0xE9, 0xBA, 0xE0, 0xBB, 0xB0, 0x6D,
- /*60   `     a     b     c     d     e     f     g */
-     0x79, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
- /*68   h     i     j     k     l     m     n     o */
-     0x88, 0x89, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96,
- /*70   p     q     r     s     t     u     v     w */
-     0x97, 0x98, 0x99, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
- /*78   x     y     z     {     |     }     ~    DL */
-     0xA7, 0xA8, 0xA9, 0xC0, 0x4F, 0xD0, 0xA1, 0x07,
- /*80*/
-     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
- /*88*/
-     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
- /*90*/
-     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
- /*98*/
-     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
- /*A0*/
-     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
- /*A8*/
-     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
- /*B0*/
-     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
- /*B8*/
-     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
- /*C0*/
-     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
- /*C8*/
-     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
- /*D0*/
-     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
- /*D8*/
-     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
- /*E0        sz						*/
-     0x3F, 0x59, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
- /*E8*/
-     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
- /*F0*/
-     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
- /*F8*/
-     0x90, 0x3F, 0x3F, 0x3F, 0x3F, 0xEA, 0x3F, 0xFF
-};
-
-/*
- * EBCDIC 037 -> ASCII (IBM PC 437)
- */
-u8 ebcdic2ascii_table[256] =
-{
- /* 0x00   NUL   SOH   STX   ETX  *SEL    HT  *RNL   DEL */
-          0x00, 0x01, 0x02, 0x03, 0x07, 0x09, 0x07, 0x7F,
- /* 0x08   -GE  -SPS  -RPT    VT    FF    CR    SO    SI */
-          0x07, 0x07, 0x07, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
- /* 0x10   DLE   DC1   DC2   DC3  -RES   -NL    BS  -POC
-                                  -ENP  ->LF             */
-          0x10, 0x11, 0x12, 0x13, 0x07, 0x0A, 0x08, 0x07,
- /* 0x18   CAN    EM  -UBS  -CU1  -IFS  -IGS  -IRS  -ITB
-                                                    -IUS */
-          0x18, 0x19, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07,
- /* 0x20   -DS  -SOS    FS  -WUS  -BYP    LF   ETB   ESC
-                                  -INP                   */
-          0x07, 0x07, 0x1C, 0x07, 0x07, 0x0A, 0x17, 0x1B,
- /* 0x28   -SA  -SFE   -SM  -CSP  -MFA   ENQ   ACK   BEL
-                       -SW                               */
-          0x07, 0x07, 0x07, 0x07, 0x07, 0x05, 0x06, 0x07,
- /* 0x30  ----  ----   SYN   -IR   -PP  -TRN  -NBS   EOT */
-          0x07, 0x07, 0x16, 0x07, 0x07, 0x07, 0x07, 0x04,
- /* 0x38  -SBS   -IT  -RFF  -CU3   DC4   NAK  ----   SUB */
-          0x07, 0x07, 0x07, 0x07, 0x14, 0x15, 0x07, 0x1A,
- /* 0x40    SP   RSP           ä              ----       */
-          0x20, 0xFF, 0x83, 0x84, 0x85, 0xA0, 0x07, 0x86,
- /* 0x48                       .     <     (     +     | */
-          0x87, 0xA4, 0x9B, 0x2E, 0x3C, 0x28, 0x2B, 0x7C,
- /* 0x50     &                                      ---- */
-          0x26, 0x82, 0x88, 0x89, 0x8A, 0xA1, 0x8C, 0x07,
- /* 0x58           ß     !     $     *     )     ;       */
-          0x8D, 0xE1, 0x21, 0x24, 0x2A, 0x29, 0x3B, 0xAA,
- /* 0x60     -     /  ----     Ä  ----  ----  ----       */
-          0x2D, 0x2F, 0x07, 0x8E, 0x07, 0x07, 0x07, 0x8F,
- /* 0x68              ----     ,     %     _     >     ? */
-          0x80, 0xA5, 0x07, 0x2C, 0x25, 0x5F, 0x3E, 0x3F,
- /* 0x70  ----        ----  ----  ----  ----  ----  ---- */
-          0x07, 0x90, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07,
- /* 0x78     *     `     :     #     @     '     =     " */
-          0x70, 0x60, 0x3A, 0x23, 0x40, 0x27, 0x3D, 0x22,
- /* 0x80     *     a     b     c     d     e     f     g */
-          0x07, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
- /* 0x88     h     i              ----  ----  ----       */
-          0x68, 0x69, 0xAE, 0xAF, 0x07, 0x07, 0x07, 0xF1,
- /* 0x90     °     j     k     l     m     n     o     p */
-          0xF8, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70,
- /* 0x98     q     r                    ----        ---- */
-          0x71, 0x72, 0xA6, 0xA7, 0x91, 0x07, 0x92, 0x07,
- /* 0xA0           ~     s     t     u     v     w     x */
-          0xE6, 0x7E, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
- /* 0xA8     y     z              ----  ----  ----  ---- */
-          0x79, 0x7A, 0xAD, 0xAB, 0x07, 0x07, 0x07, 0x07,
- /* 0xB0     ^                    ----     §  ----       */
-          0x5E, 0x9C, 0x9D, 0xFA, 0x07, 0x07, 0x07, 0xAC,
- /* 0xB8        ----     [     ]  ----  ----  ----  ---- */
-          0xAB, 0x07, 0x5B, 0x5D, 0x07, 0x07, 0x07, 0x07,
- /* 0xC0     {     A     B     C     D     E     F     G */
-          0x7B, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
- /* 0xC8     H     I  ----           ö              ---- */
-          0x48, 0x49, 0x07, 0x93, 0x94, 0x95, 0xA2, 0x07,
- /* 0xD0     }     J     K     L     M     N     O     P */
-          0x7D, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50,
- /* 0xD8     Q     R  ----           ü                   */
-          0x51, 0x52, 0x07, 0x96, 0x81, 0x97, 0xA3, 0x98,
- /* 0xE0     \           S     T     U     V     W     X */
-          0x5C, 0xF6, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
- /* 0xE8     Y     Z        ----     Ö  ----  ----  ---- */
-          0x59, 0x5A, 0xFD, 0x07, 0x99, 0x07, 0x07, 0x07,
- /* 0xF0     0     1     2     3     4     5     6     7 */
-          0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
- /* 0xF8     8     9  ----  ----     Ü  ----  ----  ---- */
-          0x38, 0x39, 0x07, 0x07, 0x9A, 0x07, 0x07, 0x07
-};
-
--- a/hercules/hvf.cnf	Fri Jun 18 20:41:48 2010 -0400
+++ b/hercules/hvf.cnf	Sat Feb 26 17:15:15 2011 -0500
@@ -31,7 +31,7 @@
 #---    ----    --------------------
 
 # Card Reader
-000C    3505    ../cp/loader_rdr.bin ../cp/hvf ebcdic multifile
+000C    3505    ../cp/loader_rdr.bin ../cp/hvf ebcdic multifile intrq
 
 # Card Punch
 000D    3525    punch00d.txt ascii
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/ebcdic.h	Sat Feb 26 17:15:15 2011 -0500
@@ -0,0 +1,41 @@
+/*
+ * (C) Copyright 2007-2010  Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
+ *
+ * This file is released under the GPLv2.  See the COPYING file for more
+ * details.
+ */
+
+#ifndef __EBCDIC_H
+#define __EBCDIC_H
+
+extern u8 ascii2ebcdic_table[256];
+extern u8 ebcdic2ascii_table[256];
+
+/*
+ * Generic translate buffer function.
+ */
+static inline void __translate(u8 *buf, int len, const u8 *table)
+{
+	asm volatile(
+		"	sgr	%%r0,%%r0\n"		/* test byte = 0 */
+		"	la	%%r2,0(%0)\n"		/* buffer */
+		"	lgr	%%r3,%2\n"		/* length */
+		"	la	%%r4,0(%1)\n"		/* table */
+		"0:	tre	%%r2,%%r4\n"
+		"	brc	1,0b\n"
+		: /* output */
+		: /* input */
+		  "a" (buf),
+		  "a" (table),
+		  "d" (len)
+		: /* clobbered */
+		  "cc", "r0", "r2", "r3", "r4"
+	);
+}
+
+#define ascii2ebcdic(buf, len)	\
+			__translate((buf), (len), ascii2ebcdic_table)
+#define ebcdic2ascii(buf, len)  \
+			__translate((buf), (len), ebcdic2ascii_table)
+
+#endif
--- a/lib/Makefile	Fri Jun 18 20:41:48 2010 -0400
+++ b/lib/Makefile	Sat Feb 26 17:15:15 2011 -0500
@@ -5,7 +5,8 @@
 
 LIBS=clock.a		\
      digest.a		\
-     string.a
+     string.a		\
+     ebcdic.a
 
 include ../cp/scripts/Makefile.commands
 
@@ -20,6 +21,9 @@
 string.a: string.o vsprintf.o
 	$(call ar,$@,$^)
 
+ebcdic.a: ebcdic.o
+	$(call ar,$@,$^)
+
 %.o: %.c
 	$(call c-to-o,$<,$@)
 
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/ebcdic.c	Sat Feb 26 17:15:15 2011 -0500
@@ -0,0 +1,161 @@
+/*
+ * (C) Copyright 2007-2010  Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
+ *
+ * This file is released under the GPLv2.  See the COPYING file for more
+ * details.
+ */
+
+#include <ebcdic.h>
+
+/*
+ * Tables taken from Linux's arch/s390/kernel/ebcdic.c
+ */
+
+/*
+ * ASCII (IBM PC 437)  -> EBCDIC 037
+ */
+u8 ascii2ebcdic_table[256] =
+{
+ /*00 NUL   SOH   STX   ETX   EOT   ENQ   ACK   BEL */
+     0x00, 0x01, 0x02, 0x03, 0x37, 0x2D, 0x2E, 0x2F,
+ /*08  BS    HT    LF    VT    FF    CR    SO    SI */
+ /*              ->NL                               */
+     0x16, 0x05, 0x15, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+ /*10 DLE   DC1   DC2   DC3   DC4   NAK   SYN   ETB */
+     0x10, 0x11, 0x12, 0x13, 0x3C, 0x3D, 0x32, 0x26,
+ /*18 CAN    EM   SUB   ESC    FS    GS    RS    US */
+ /*                               ->IGS ->IRS ->IUS */
+     0x18, 0x19, 0x3F, 0x27, 0x22, 0x1D, 0x1E, 0x1F,
+ /*20  SP     !     "     #     $     %     &     ' */
+     0x40, 0x5A, 0x7F, 0x7B, 0x5B, 0x6C, 0x50, 0x7D,
+ /*28   (     )     *     +     ,     -    .      / */
+     0x4D, 0x5D, 0x5C, 0x4E, 0x6B, 0x60, 0x4B, 0x61,
+ /*30   0     1     2     3     4     5     6     7 */
+     0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
+ /*38   8     9     :     ;     <     =     >     ? */
+     0xF8, 0xF9, 0x7A, 0x5E, 0x4C, 0x7E, 0x6E, 0x6F,
+ /*40   @     A     B     C     D     E     F     G */
+     0x7C, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
+ /*48   H     I     J     K     L     M     N     O */
+     0xC8, 0xC9, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6,
+ /*50   P     Q     R     S     T     U     V     W */
+     0xD7, 0xD8, 0xD9, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6,
+ /*58   X     Y     Z     [     \     ]     ^     _ */
+     0xE7, 0xE8, 0xE9, 0xBA, 0xE0, 0xBB, 0xB0, 0x6D,
+ /*60   `     a     b     c     d     e     f     g */
+     0x79, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
+ /*68   h     i     j     k     l     m     n     o */
+     0x88, 0x89, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96,
+ /*70   p     q     r     s     t     u     v     w */
+     0x97, 0x98, 0x99, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
+ /*78   x     y     z     {     |     }     ~    DL */
+     0xA7, 0xA8, 0xA9, 0xC0, 0x4F, 0xD0, 0xA1, 0x07,
+ /*80*/
+     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+ /*88*/
+     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+ /*90*/
+     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+ /*98*/
+     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+ /*A0*/
+     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+ /*A8*/
+     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+ /*B0*/
+     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+ /*B8*/
+     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+ /*C0*/
+     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+ /*C8*/
+     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+ /*D0*/
+     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+ /*D8*/
+     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+ /*E0        sz						*/
+     0x3F, 0x59, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+ /*E8*/
+     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+ /*F0*/
+     0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+ /*F8*/
+     0x90, 0x3F, 0x3F, 0x3F, 0x3F, 0xEA, 0x3F, 0xFF
+};
+
+/*
+ * EBCDIC 037 -> ASCII (IBM PC 437)
+ */
+u8 ebcdic2ascii_table[256] =
+{
+ /* 0x00   NUL   SOH   STX   ETX  *SEL    HT  *RNL   DEL */
+          0x00, 0x01, 0x02, 0x03, 0x07, 0x09, 0x07, 0x7F,
+ /* 0x08   -GE  -SPS  -RPT    VT    FF    CR    SO    SI */
+          0x07, 0x07, 0x07, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+ /* 0x10   DLE   DC1   DC2   DC3  -RES   -NL    BS  -POC
+                                  -ENP  ->LF             */
+          0x10, 0x11, 0x12, 0x13, 0x07, 0x0A, 0x08, 0x07,
+ /* 0x18   CAN    EM  -UBS  -CU1  -IFS  -IGS  -IRS  -ITB
+                                                    -IUS */
+          0x18, 0x19, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07,
+ /* 0x20   -DS  -SOS    FS  -WUS  -BYP    LF   ETB   ESC
+                                  -INP                   */
+          0x07, 0x07, 0x1C, 0x07, 0x07, 0x0A, 0x17, 0x1B,
+ /* 0x28   -SA  -SFE   -SM  -CSP  -MFA   ENQ   ACK   BEL
+                       -SW                               */
+          0x07, 0x07, 0x07, 0x07, 0x07, 0x05, 0x06, 0x07,
+ /* 0x30  ----  ----   SYN   -IR   -PP  -TRN  -NBS   EOT */
+          0x07, 0x07, 0x16, 0x07, 0x07, 0x07, 0x07, 0x04,
+ /* 0x38  -SBS   -IT  -RFF  -CU3   DC4   NAK  ----   SUB */
+          0x07, 0x07, 0x07, 0x07, 0x14, 0x15, 0x07, 0x1A,
+ /* 0x40    SP   RSP           ä              ----       */
+          0x20, 0xFF, 0x83, 0x84, 0x85, 0xA0, 0x07, 0x86,
+ /* 0x48                       .     <     (     +     | */
+          0x87, 0xA4, 0x9B, 0x2E, 0x3C, 0x28, 0x2B, 0x7C,
+ /* 0x50     &                                      ---- */
+          0x26, 0x82, 0x88, 0x89, 0x8A, 0xA1, 0x8C, 0x07,
+ /* 0x58           ß     !     $     *     )     ;       */
+          0x8D, 0xE1, 0x21, 0x24, 0x2A, 0x29, 0x3B, 0xAA,
+ /* 0x60     -     /  ----     Ä  ----  ----  ----       */
+          0x2D, 0x2F, 0x07, 0x8E, 0x07, 0x07, 0x07, 0x8F,
+ /* 0x68              ----     ,     %     _     >     ? */
+          0x80, 0xA5, 0x07, 0x2C, 0x25, 0x5F, 0x3E, 0x3F,
+ /* 0x70  ----        ----  ----  ----  ----  ----  ---- */
+          0x07, 0x90, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07,
+ /* 0x78     *     `     :     #     @     '     =     " */
+          0x70, 0x60, 0x3A, 0x23, 0x40, 0x27, 0x3D, 0x22,
+ /* 0x80     *     a     b     c     d     e     f     g */
+          0x07, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+ /* 0x88     h     i              ----  ----  ----       */
+          0x68, 0x69, 0xAE, 0xAF, 0x07, 0x07, 0x07, 0xF1,
+ /* 0x90     °     j     k     l     m     n     o     p */
+          0xF8, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70,
+ /* 0x98     q     r                    ----        ---- */
+          0x71, 0x72, 0xA6, 0xA7, 0x91, 0x07, 0x92, 0x07,
+ /* 0xA0           ~     s     t     u     v     w     x */
+          0xE6, 0x7E, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
+ /* 0xA8     y     z              ----  ----  ----  ---- */
+          0x79, 0x7A, 0xAD, 0xAB, 0x07, 0x07, 0x07, 0x07,
+ /* 0xB0     ^                    ----     §  ----       */
+          0x5E, 0x9C, 0x9D, 0xFA, 0x07, 0x07, 0x07, 0xAC,
+ /* 0xB8        ----     [     ]  ----  ----  ----  ---- */
+          0xAB, 0x07, 0x5B, 0x5D, 0x07, 0x07, 0x07, 0x07,
+ /* 0xC0     {     A     B     C     D     E     F     G */
+          0x7B, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
+ /* 0xC8     H     I  ----           ö              ---- */
+          0x48, 0x49, 0x07, 0x93, 0x94, 0x95, 0xA2, 0x07,
+ /* 0xD0     }     J     K     L     M     N     O     P */
+          0x7D, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50,
+ /* 0xD8     Q     R  ----           ü                   */
+          0x51, 0x52, 0x07, 0x96, 0x81, 0x97, 0xA3, 0x98,
+ /* 0xE0     \           S     T     U     V     W     X */
+          0x5C, 0xF6, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
+ /* 0xE8     Y     Z        ----     Ö  ----  ----  ---- */
+          0x59, 0x5A, 0xFD, 0x07, 0x99, 0x07, 0x07, 0x07,
+ /* 0xF0     0     1     2     3     4     5     6     7 */
+          0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
+ /* 0xF8     8     9  ----  ----     Ü  ----  ----  ---- */
+          0x38, 0x39, 0x07, 0x07, 0x9A, 0x07, 0x07, 0x07
+};
+
--- a/loader/loader_asm.S	Fri Jun 18 20:41:48 2010 -0400
+++ b/loader/loader_asm.S	Sat Feb 26 17:15:15 2011 -0500
@@ -38,15 +38,8 @@
 /*
 7) Enable the PSW for I/O interrupts and go into wait state (you need bits 6, 12 & 14 set to 1 in the PSW : X'020A000000000000' is a good example)
 */
-	LA	%r3, RETURN(%r4)	# interrupt return address
-	#STG	%r1, WAITPSW+8(%r4)	
-
 	LPSWE	WAITPSW(%r4)
 
-RETURN:
-	SR	%r2, %r2	# return 0
-	BR	%r14		# Done, let's go back to C!
-
 #
 # The IO interrupt handler
 #
@@ -63,11 +56,6 @@
 
 	TSCH	IRB(%r4)
 
-	# check the SCSW.. If CE Only : LPSW Old I/O PSW
-	L	%r1, IRB+5(%r4)
-	NILL	%r1, 0x04
-	BC	8, IONOTDONE(%r4)	# not device end => LPSWE
-
 /*
 FIXME: we should do more checking!
 
@@ -76,8 +64,18 @@
 13) If device end : I/O Completed.. Perform post I/O stuff (like advancing your pointers) and back to step 3
 */
 
-	# return to the "caller"
-	BR	%r3
+	# unit check? (end of media?)
+	L	%r1,IRB+5(%r4)
+	LA	%r0,0x02
+	NR	%r0,%r1
+	LA	%r2,1			# return 1 - end of medium
+	BCR	4,%r14			# unit chk => return
+
+	# check the SCSW.. If CE Only : LPSW Old I/O PSW
+	LA	%r0,0x04
+	NR	%r0,%r1
+	LA	%r2,0			# means IO done
+	BCR	4,%r14			# device end => return
 
 IONOTDONE:
 	LPSWE	0x170