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Refined the comments in the target start-up files.

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Fixed typo errors.  Made the comments consistent across all those files.
This commit is contained in:
Greg King
2014-08-23 14:05:36 -04:00
parent 6df42052b0
commit c7969a78b0
15 changed files with 340 additions and 339 deletions
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36
libsrc/c128/crt0.s
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@@ -22,21 +22,21 @@
Start:
; Switch to the second charset
; Switch to the second charset.
lda #14
jsr BSOUT
; Before doing anything else, we have to setup our banking configuration.
; Otherwise just the lowest 16K are actually RAM. Writing through the ROM
; to the underlying RAM works, but it is bad style.
; Before doing anything else, we have to set up our banking configuration.
; Otherwise, just the lowest 16K are actually RAM. Writing through the ROM
; to the underlying RAM works; but, it is bad style.
lda MMU_CR ; Get current memory configuration...
pha ; ...and save it for later
lda #MMU_CFG_CC65 ; Bank0 with kernal ROM
lda #MMU_CFG_CC65 ; Bank0 with Kernal ROM
sta MMU_CR
; Save the zero page locations we need
; Save the zero-page locations that we need.
ldx #zpspace-1
L1: lda sp,x
@@ -44,11 +44,11 @@ L1: lda sp,x
dex
bpl L1
; Clear the BSS data
; Clear the BSS data.
jsr zerobss
; Save system stuff and setup the stack
; Save some system stuff; and, set up the stack.
pla ; Get MMU setting
sta mmusave
@@ -61,27 +61,27 @@ L1: lda sp,x
lda #>(__RAM_START__ + __RAM_SIZE__ + __STACKSIZE__)
sta sp+1 ; Set argument stack ptr
; Call module constructors
; Call the module constructors.
jsr initlib
; Set the bank for the file name to our execution bank. We must do this,
; *after* calling constructors, because some of them may depend on the
; original value of this register.
; Set the bank for the file name to our execution bank. We must do this
; *after* calling the constructors because some of them might depend on
; the original value of this register.
lda #0
sta FNAM_BANK
; Push arguments and call main()
; Push the command-line arguments; and, call main().
jsr callmain
; Back from main (this is also the _exit entry). Run module destructors
; Back from main() [this is also the exit() entry]. Run the module destructors.
_exit: pha ; Save the return code on stack
jsr donelib
; Copy back the zero page stuff
; Copy back the zero-page stuff.
ldx #zpspace-1
L2: lda zpsave,x
@@ -89,19 +89,19 @@ L2: lda zpsave,x
dex
bpl L2
; Place the program return code into ST
; Place the program return code into BASIC's status variable.
pla
sta ST
; Reset the stack and the memory configuration
; Reset the stack and the memory configuration.
ldx spsave
txs
ldx mmusave
stx MMU_CR
; Done, return to BASIC
; Done, return to BASIC.
rts