Mercurial > hg > Members > kono > os9 > sbc09

changeset 12:111e5defb8ab

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boot is called, rti failed
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Sat, 07 Jul 2018 00:37:24 +0900
parents ce7323f9b937
children 2aebc6b17fbf
files a09.c io.c os9/makerom.c os9/os9disass.c v09.c
diffstat 5 files changed, 27 insertions(+), 21 deletions(-) [+]
line wrap: on
line diff
--- a/a09.c	Fri Jul 06 18:31:38 2018 +0900
+++ b/a09.c	Sat Jul 07 00:37:24 2018 +0900
@@ -933,11 +933,11 @@
     break;
  case 4: case 6: offs=(unsigned short)operand-loccounter-codeptr-2;
                 if(offs<-128||offs>=128||opsize==3||unknown||!certain) {
-                 if((!unknown)&&opsize==2&&(offs<-128||offs>=128) )
-                   error|=16;
-                 // offs--;
-                 // opsize=3;
-                 // postbyte++;
+                  if((!unknown)&&opsize==2&&(offs<-128||offs>=128) )
+                     error|=16;
+                  offs--;
+                  opsize=3;
+                  postbyte++;
                 }
                 putbyte(postbyte);
                 if (debug) fprintf(stderr,"DEBUG: doaddress: mode=%d, opsize=%d, error=%d, postbyte=%02X, operand=%04X offs=%d\n",mode,opsize,error,postbyte,operand,offs);
--- a/io.c	Fri Jul 06 18:31:38 2018 +0900
+++ b/io.c	Sat Jul 07 00:37:24 2018 +0900
@@ -98,7 +98,7 @@
 FILE *disk[] = {0,0};
 
 extern void hexadump( unsigned char *b, int l, int loc, int w);
-extern void disasm(int,int);
+extern int disasm(int,int);
 #ifdef USE_MMU
 extern char *prog ;   // for disass
 extern Byte * mem0(Byte *iphymem, Word adr, Byte *immu) ;
@@ -489,12 +489,15 @@
                       len =  getarg(next,&next);
                    }
                    if (skip==2 && s[1]=='i') {
-                     for(int i=0; len > 0 ; i+=16, len-=16) {
+                     Word end = adr + len;
+                     while(adr < end) {
 #ifdef USE_MMU
-                        Byte *phyadr = mem0(phymem,adr+i,mmu);
-                        prog = (char*)phyadr - adr;
+                        Byte *phyadr = mem0(phymem,adr,mmu);
+                        prog = (char*)phyadr - adr  ;
+                        if (phyadr > phymem+memsize) goto restart;
 #endif
-                        disasm(adr+i,adr+i+(len>16?16:len));
+                        int len = adr+16<end? 16 : end-adr -1 ;
+                        adr = disasm(adr,adr+len);
                       }
                    } else {
 #ifdef USE_MMU
--- a/os9/makerom.c	Fri Jul 06 18:31:38 2018 +0900
+++ b/os9/makerom.c	Sat Jul 07 00:37:24 2018 +0900
@@ -26,7 +26,7 @@
  *        8k block ( offset 0xc000 )
  *
  *        0xe000 - 0xccff   0xff
- *        0xed00 - 0xff78   os9 modules,  os9p1 should be the last
+ *        0xed00 - 0xfeff   os9 modules,  os9p1 should be the last
  *                 MMU doesnot touch below
  *        0xff80 - 0xffdf   IO port  ( ACIA, clock, pdisk, MMU )
  *        0xffd0 - 0xffef   boot code
@@ -40,7 +40,8 @@
 int IOSIZE = 0x100;
 char * outfile ;
 
-#define LV2START 0xffd0
+#define LV2START  0xffd0     // our own small boot for mmu
+#define LV2ROMEND 0xff00
 
 // #define DEBUG
 
@@ -97,13 +98,13 @@
     return (ptr[0]<<8)+ptr[1];
 }
 
-void rewrite_vector(MPTR m,int top, unsigned char *adr,int count)
+void rewrite_vector(MPTR m,int size, unsigned char *adr,int count)
 {
     // vector is a offset from $F100 (possibly os9p1 module address)
-    int offset = 0xf100-top;
+    int offset = -size-0xf100;
     for(int i=0;i<count;i++) {
         int vec = getword(adr);
-        vec -= offset;
+        vec += offset;
         adr[0] = vec>>8;
         adr[1] = vec&0xff;
         adr += 2;
@@ -120,8 +121,8 @@
        if (level == 1)
           top = 0xf800;  // OS9p1
        else {
-          top = 0x10000-(m->size+0x80);
-          rewrite_vector(m,top,m->mod+getword(m->mod+2),7);
+          top = 0x10000-(m->size+0x100);
+          rewrite_vector(m,m->size,m->mod+getword(m->mod+2),7);
        }
    }
    if (level==1 && !(( top+m->size < IOBASE )  || ( IOBASE+IOSIZE < top)) ) {
@@ -155,7 +156,7 @@
     if (*av[i]=='-') {
         if (av[i][1] =='2') {  // for level 2
             level = 2;
-            IOBASE = 0xff00;
+            IOBASE = LV2ROMEND;
         } else if (av[i][1] =='o') {
             outfile = av[i+1];
             i += 1;
@@ -202,8 +203,8 @@
               fputc(0xff,romfile);
            }
         } else {
-           int pend = 0x10000-( cur->size +0x80);
-           for(; pos < pend ; pos++) {      // os9p1 ends 0xff7f
+           int pend = 0x10000-( cur->size +0x100);
+           for(; pos < pend ; pos++) {      // os9p1 ends 0xfeff
               fputc(0xff,romfile);
            }
         }
--- a/os9/os9disass.c	Fri Jul 06 18:31:38 2018 +0900
+++ b/os9/os9disass.c	Sat Jul 07 00:37:24 2018 +0900
@@ -1591,7 +1591,7 @@
   return "";
 }
 
-void disasm(start, end)
+int disasm(start, end)
 int start;
 int end;
 {
@@ -1615,6 +1615,7 @@
     pc += (*optable[code].display)(&optable[code], code, pc, "   ");
     fprintf(fp,"\n");
   }
+  return pc;
 }
 
 #ifndef NO_MAIN
--- a/v09.c	Fri Jul 06 18:31:38 2018 +0900
+++ b/v09.c	Sat Jul 07 00:37:24 2018 +0900
@@ -87,6 +87,7 @@
      mem    = phymem + memsize - 0x10000 ;
      mmu    = mem + 0xffa0;
      romstart = memsize - 0x2000;
+     memsize = memsize + len - 0x2000;
 #else
      romstart = 0x10000 - len; 
 #endif