z8Encore! integrated on simulator

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@727 42af7a65-404d-4744-a932-0658087f49c3

TODO

@@ -20,7 +20,7 @@ NuttX TODO List (Last updated February 13, 2008)
   (1)  ARM/DM320 (arch/arm/src/dm320/)
   (2)  ARM/LPC214x (arch/arm/src/lpc214x/)
   (4)  pjrc-8052 / MCS51 (arch/pjrc-8051/)
-  (5)  z80/z8 (arch/z80/)
+  (6)  z80/z8 (arch/z80/)
   (7)  z16 (arch/z16/)
 
 o Task/Scheduler (sched/)
@@ -401,6 +401,11 @@ o z80/z8 (arch/z80)
   Status:      Open
   Priority:    Low
 
+  Description: The z8Encore! port has only been verified on the ZDS-II instruction
+               set simulator.
+  Status:      Open
+  Priority:    Medium
+
 o z16 (arch/z16)
 ^^^^^^^^^^^^^^^^
 

arch/z80/src/common/up_doirq.c

@@ -96,7 +96,7 @@ FAR chipreg_t *up_doirq(ubyte irq, FAR chipreg_t *regs)
 
        regs = IRQ_STATE();
 
-       /* Indicate that we are no long in interrupt processing logic */
+       /* Indicate that we are no longer in interrupt processing logic */
 
        IRQ_LEAVE(irq);
     }

arch/z80/src/z8/z8_restorecontext.S

@@ -97,8 +97,7 @@ _z8_restorecontext:
 	ldx	r7, 3(rr0)
 
 	/* Copy all registers into the user register area.  NOTE: we
-	 * should use the saved RP value to determine the destination
-	 * address
+	 * use the saved RP value to determine the destination adress.
 	 */
 
 	clr	r0			/* rr0 = destination address */
@@ -130,8 +129,8 @@ _z8_restore:
 
 	/* Recover the flags and RP settings.. but don't restore them yet */
 
-	ldx	r1, XCPT_FLAGS_OFFS(rr0)
-	ldx	r2, XCPT_RP_OFFS(rr0)
+	ldx	r1, XCPT_FLAGS_OFFS(rr6)
+	ldx	r2, XCPT_RP_OFFS(rr6)
 
 	/* Determine whether interrupts must be enabled on return.  This
 	 * would be nicer to do below, but later we will need to preserve

configs/z8encore000zco/ostest/defconfig

@@ -310,12 +310,16 @@ CONFIG_NET_BROADCAST=n
 CONFIG_NET_DHCP_LIGHT=n
 CONFIG_NET_RESOLV_ENTRIES=4
 
+#
+# Settings for examples/ostest
+CONFIG_OSTEST_STACKSIZE=256
+
 #
 # Settings for examples/nsh
 CONFIG_EXAMPLES_NSH_TELNET=n
 CONFIG_EXAMPLES_NSH_IOBUFFER_SIZE=512
 CONFIG_EXAMPLES_NSH_CMD_SIZE=40
-CONFIG_EXAMPLES_NSH_STACKSIZE=4096
+CONFIG_EXAMPLES_NSH_STACKSIZE=512
 CONFIG_EXAMPLES_NSH_DHCPC=n
 CONFIG_EXAMPLES_NSH_NOMAC=n
 CONFIG_EXAMPLES_NSH_IPADDR=(10<<24|0<<16|0<<8|2)
@@ -338,8 +342,8 @@ CONFIG_EXAMPLES_NSH_NETMASK=(255<<24|255<<16|255<<8|0)
 #
 CONFIG_BOOT_FROM_FLASH=n
 CONFIG_CUSTOM_STACK=n
-CONFIG_PROC_STACK_SIZE=1024
-CONFIG_PTHREAD_STACK_MIN=256
-CONFIG_PTHREAD_STACK_DEFAULT=1024
+CONFIG_PROC_STACK_SIZE=256
+CONFIG_PTHREAD_STACK_MIN=128
+CONFIG_PTHREAD_STACK_DEFAULT=256
 CONFIG_HEAP_SIZE=
 CONFIG_HEAP_BASE=