Mercurial > hg > Members > kono > os9 > sbc09

changeset 13:2aebc6b17fbf

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swi/rti bug fixed
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Sat, 07 Jul 2018 12:45:31 +0900
parents 111e5defb8ab
children 3f18c1fa9132
files engine.c io.c os9/level2/vector.asm
diffstat 3 files changed, 13 insertions(+), 11 deletions(-) [+]
line wrap: on
line diff
--- a/engine.c	Sat Jul 07 00:37:24 2018 +0900
+++ b/engine.c	Sat Jul 07 12:45:31 2018 +0900
@@ -250,14 +250,15 @@
    			 PUSHBYTE(idpreg)
    			 PUSHBYTE(ibreg)
    			 PUSHBYTE(iareg)
+   			 iccreg|=0x80;
    			 PUSHBYTE(iccreg)
    			 iccreg|=0x90;
      			 ipcreg=GETWORD(0xfff8);
     }
     if(irq==2&&!(iccreg&0x40)) { /* Fast IRQ */
 			 PUSHWORD(ipcreg)
+   			 iccreg&=0x7f;
    			 PUSHBYTE(iccreg)
-   			 iccreg&=0x7f;
     			 iccreg|=0x50;
     			 ipcreg=GETWORD(0xfff6);
     }
@@ -665,8 +666,8 @@
  		if(tb&0x80)PULUWORD(ipcreg) break;
    case 0x39: /* RTS*/ PULLWORD(ipcreg) break;
    case 0x3A: /* ABX*/ ixreg+=ibreg; break;
-   case 0x3B: /* RTI*/  tb=iccreg&0x80;
-			PULLBYTE(iccreg)
+   case 0x3B: /* RTI*/  PULLBYTE(iccreg)
+                        tb=iccreg&0x80;
 			if(tb)
  			{
   			 PULLBYTE(iareg)
@@ -706,8 +707,8 @@
    			 PUSHBYTE(idpreg)
    			 PUSHBYTE(ibreg)
    			 PUSHBYTE(iareg)
+   			 iccreg|=0x80;
    			 PUSHBYTE(iccreg)
-   			 iccreg|=0x80;
    			 if(!iflag)iccreg|=0x50;
    			 switch(iflag) {
                           case 0:ipcreg=GETWORD(0xfffa);break;
--- a/io.c	Sat Jul 07 00:37:24 2018 +0900
+++ b/io.c	Sat Jul 07 12:45:31 2018 +0900
@@ -326,10 +326,10 @@
 #ifdef USE_MMU
 
    if (a==0x11+(IOPAGE&0xff)) {
-       if (c&0) {
+       if (c&1) {
+           mmu = phymem+memsize-0x10000+0xffa8;
+       } else {
            mmu = phymem+memsize-0x10000+0xffa0;
-       } else {
-           mmu = phymem+memsize-0x10000+0xffa8;
        }
    }
    mem[(IOPAGE&0xff00)+a] = c;   // other register such as 0xffa0-0xffaf
@@ -602,6 +602,8 @@
                 break;
         case 'R':
                 pcreg = (mem[0xfffe] << 8) + mem[0xffff];
+                bpskip = 0;
+                attention = escape = 1;
                 break;
         }
         if (tracing||breakpoint||trskip||bpskip||stkskip) { attention = escape = 1; }
--- a/os9/level2/vector.asm	Sat Jul 07 00:37:24 2018 +0900
+++ b/os9/level2/vector.asm	Sat Jul 07 12:45:31 2018 +0900
@@ -4,11 +4,10 @@
 reset   clra
         tfr      a,dp
         ldx      #$ff90
-        sta      $10,x
+        sta      1,x       use system mmu
+        sta      $10,x     set 0 page
         lda      #$3f
-        sta      $17,x
-        lda      #1
-        sta      1,x
+        sta      $17,x     set IO/os9p1 page
         jmp      [<vector,pcr]
 
         org      $fff0