comment and formatting fixes

diff --git a/libsrc/atari/romswitch.inc b/libsrc/atari/romswitch.inc
index 7169f2b39ce1c5ba5fc8ac92b80af4d1a39e6865..ed4cd96d806245a3b2468d3e1e7b2ddabf9d0567 100644 (file)
--- a/libsrc/atari/romswitch.inc
+++ b/libsrc/atari/romswitch.inc
@@ -28,7 +28,7 @@
         sta     CHBASE
 .endmacro
 
-.else
+.else   ; above CHARGEN_RELOC, below not
 
 .macro  set_chbase val
 .endmacro
@@ -42,7 +42,7 @@
         sta     WSYNC
 .endmacro
 
-.else   ; above 
+.else   ; above USEWSYNC, below not
 
 .macro  wsync
 .endmacro

diff --git a/libsrc/atari/shadow_ram_prepare.s b/libsrc/atari/shadow_ram_prepare.s
index a08aa8cfeb8c33ff7550fac100020c94db367ef1..76fae2f4544e89f79e30bfa5d93a7f801632936a 100644 (file)
--- a/libsrc/atari/shadow_ram_prepare.s
+++ b/libsrc/atari/shadow_ram_prepare.s
@@ -55,6 +55,8 @@ cont:   ldx     #0              ; channel 0
 
 .segment        "SRPREP"
 
+; ***** entry point *****
+
 sramprep:
 .ifdef DEBUG
         print_string "entering stage #2"
@@ -115,7 +117,7 @@ sramprep:
 iocbok:
 .endif
 
-        ; Reopen it in Graphics 0
+        ; reopen it in Graphics 0
         lda     #OPEN
         sta     ICCOM,x
         lda     #OPNIN | OPNOT
@@ -212,8 +214,8 @@ cg_addr_ok2:
 
 ; switch to temporary chargen
 
-        sta CHBASE
-        sta CHBAS
+        sta     CHBASE
+        sta     CHBAS
 
 ; copy shadow RAM contents to their destination (segment SHADOW_RAM)
 
@@ -245,7 +247,7 @@ no_copy:
         lda     #<__SHADOW_RAM2_SIZE__
         bne     do_copy2
         lda     #>__SHADOW_RAM2_SIZE__
-        beq     no_copy2                ; we have no shadow RAM contents
+        beq     no_copy2                ; we have no shadow RAM #2 contents
 
         ; ptr1 - src; ptr2 - dest; tmp1, tmp2 - len
 do_copy2:

diff --git a/libsrc/atari/system_check.s b/libsrc/atari/system_check.s
index 84573c84a7d7da0dab040114b60b28fafb850778..ef544ef6f31831375caee83ceedc5269ccbb96c6 100644 (file)
--- a/libsrc/atari/system_check.s
+++ b/libsrc/atari/system_check.s
@@ -7,8 +7,8 @@
 ; and that enough memory is installed (which isn't the case for a 600XL).
 ; For the non-XL target it checks whether there is enough memory
 ; installed to run the program.
-; For both target it checks that the program won't load below MEMLO.
-; If one of the checks fails the loading of the main program
+; For both targets it checks that the program won't load below MEMLO.
+; If one of the checks fails, the loading of the main program
 ; is aborted by jumping to DOSVEC.
 ;
 ; Christian Groessler, chris@groessler.org, 2013
@@ -46,8 +46,8 @@ cont:   ldx     #0              ; channel 0
         sta     ICCOM,x
         jsr     CIOV_org
 .endmacro
-.macro print_string2 addr, len
 
+.macro print_string2 addr, len
         ldx     #0              ; channel 0
         lda     #<addr
         sta     ICBAL,x         ; address
@@ -60,7 +60,6 @@ cont:   ldx     #0              ; channel 0
         lda     #PUTCHR
         sta     ICCOM,x
         jsr     CIOV_org
-
 .endmacro