X-Git-Url: https://git.gag.com/?a=blobdiff_plain;ds=sidebyside;f=device%2Flib%2Fds390%2Ftinibios.c;h=13f87e12ca7c42d641e8910e30b008b4aa7902f2;hb=85ea7f79d191a61dccccc85ca90a8bff5e4efe66;hp=71c56cbdc830defbc5e238337d5f1876104be751;hpb=02e2c82005c8878026aea05436e0f59f3f5f8531;p=fw%2Fsdcc

diff --git a/device/lib/ds390/tinibios.c b/device/lib/ds390/tinibios.c
index 71c56cbd..13f87e12 100755
--- a/device/lib/ds390/tinibios.c
+++ b/device/lib/ds390/tinibios.c
@@ -341,6 +341,7 @@ void Serial1Init (unsigned long baud, unsigned char buffered) {
   if (baud==0) {
     ES1=0; // disable interrupt
     SCON1 &= 0xef; // disable receiver
+    return; // and don't touch it
   }
 
   ES1 = 0; // disable channel 1 interrupt
@@ -486,37 +487,34 @@ void ClockInit() {
 // This needs to be SUPER fast. What we really want is:
 
 #if 0
-void ClockIrqHandler (void) interrupt 1 {
+void junk_ClockIrqHandler (void) interrupt 10 {
   TL0=timer0ReloadValue&0xff;
   TH0=timer0ReloadValue>>8;
   milliSeconds++;
 }
 #else
 // but look at the code, and the pushes and pops, so:
-#pragma EXCLUDE b,dpl,dph,dpx
-void ClockIrqHandler (void) interrupt 1 {
+void ClockIrqHandler (void) interrupt 1 _naked
+{
   _asm
+    push acc
+    push psw
     mov _TL0,_timer0ReloadValue
     mov _TH0,_timer0ReloadValue+1
-    mov a,#0x01
-    add a,_milliSeconds+0
-    mov _milliSeconds,a
-    jnc _ClockIrqHandlerDone
-    clr a
-    addc a,_milliSeconds+1
-    mov _milliSeconds+1,a
-    jnc _ClockIrqHandlerDone
-    clr a
-    addc a,_milliSeconds+2
-    mov _milliSeconds+1,a
-    jnc _ClockIrqHandlerDone
     clr a
-    addc a,_milliSeconds+3
-    mov _milliSeconds+1,a
+    inc _milliSeconds+0
+    cjne a,_milliSeconds+0,_ClockIrqHandlerDone
+    inc _milliSeconds+1
+    cjne a,_milliSeconds+1,_ClockIrqHandlerDone
+    inc _milliSeconds+2
+    cjne a,_milliSeconds+2,_ClockIrqHandlerDone
+    inc _milliSeconds+3
    _ClockIrqHandlerDone:
+    pop psw
+    pop acc
+    reti
   _endasm;
 }
-#pragma EXCLUDE NONE
 #endif
 
 // we can't just use milliSeconds