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changeset 3181:d9760f344c96

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Whitespace/comments in Atari sections of krn, clock, sysgo
author Boisy Pitre <coco@toughmac.com>
date Tue, 16 May 2017 19:34:56 +0200
parents 1c75a05d3304
children 185c31229f22
files level1/modules/clock.asm level1/modules/kernel/krn.asm level1/modules/sysgo.asm
diffstat 3 files changed, 18 insertions(+), 14 deletions(-) [+]
line wrap: on
line diff
--- a/level1/modules/clock.asm	Tue May 16 23:24:00 2017 +0200
+++ b/level1/modules/clock.asm	Tue May 16 19:34:56 2017 +0200
@@ -119,6 +119,7 @@
          lda   #Sbrtn+Objct
          os9   F$Link    
          bcc   LinkOk    
+
          jmp   >$FFFE     level 1: jump to reset vector
                          
 LinkOk                   
@@ -161,10 +162,10 @@
          ELSE
          lda   #IRQST.TIMER1
          pshs  cc
-	    orcc	#IntMasks
-	    ora	<D.IRQENShdw
-	    sta	<D.IRQENShdw
-	    sta   IRQEN
+	 orcc	#IntMasks
+	 ora	<D.IRQENShdw
+	 sta	<D.IRQENShdw
+	 sta   IRQEN
          lda   #%00101001
          sta   AUDCTL
          clr   AUDC1
--- a/level1/modules/kernel/krn.asm	Tue May 16 23:24:00 2017 +0200
+++ b/level1/modules/kernel/krn.asm	Tue May 16 19:34:56 2017 +0200
@@ -88,7 +88,6 @@
 * OS-9 Genesis!
 
 OS9Cold  equ   *
-         
 * clear out system globals from $0000-$0400
 *         ldx   #D.FMBM
          ldx   #$0000
@@ -174,24 +173,25 @@
          ENDC
          puls  x
 
+* Atari has bootfile already in memory
          IFNE  atari
-         ldy   #$D000
-
+* flag that we've booted and that Boot Low starts appropriately
+         ldy   #$D000           Atari: I/O is at $D000-$D7FF
          inc   <D.Boot
          stx   <D.BTLO
-         ldx	#$FFFF
+         ldx   #$FFFF
          stx   <D.BTHI
-
          ELSE
          ldy	#Bt.Start+Bt.Size
          ENDC
          
          lbsr	ValMods
+
+* Atari: look for more modules at $D800-$F3FF
          IFNE  atari
-
          ldx   #$D800				
          ldy   #$F400
-         lbsr	ValMods
+         lbsr  ValMods
          ENDC
          
 * Copy vectors to system globals
@@ -249,8 +249,9 @@
 L0158    ldx   <D.FMBM
 * Free-memory bitmap. Bit7 of 0,x corresponds to page 0, bit6 to page 1 etc.
 * Bit7 of 1,x corresponds to page 8, bit6 to page 9 etc, etc.
+
          IFNE  atari
-* In the Atari, memory $0000-$08FF is used by the system
+* Atari needs $0000-$08FF and $D000-$D7FF reserved
          ldb   #%11111111
          stb   ,x                       mark $0000-$07FF as allocated
          stb   $1A,x                    mark $D000-$D7FF I/O area as allocated
@@ -261,6 +262,7 @@
          ldb   #%11111000
          stb   ,x
          ENDC
+
 * For all platforms exclude high memory as defined (earlier) by D.MLIM
          clra
          ldb   <D.MLIM
@@ -283,7 +285,7 @@
          ldb   #P$SWI2
          bra   L018C
 SVCNMI   jmp	[>D.NMI]
-DUMMY	rti
+DUMMY	 rti
 SVCIRQ   jmp   [>D.SvcIRQ]
 SWI      pshs  pc,x,b
          ldb   #P$SWI
--- a/level1/modules/sysgo.asm	Tue May 16 23:24:00 2017 +0200
+++ b/level1/modules/sysgo.asm	Tue May 16 19:34:56 2017 +0200
@@ -185,7 +185,8 @@
 * Set default time
          leax  >DefTime,pcr
          os9   F$STime                 set time to default
-       IFEQ  ROM
+
+         IFEQ  ROM
 * Change EXEC and DATA dirs
          leax  >ExecDir,pcr
          lda   #EXEC.