new line read fixes

This commit is contained in:
Kelvin Sherlock 2015-08-29 10:46:21 -04:00
parent 5947705e17
commit 75411459f2
1 changed files with 38 additions and 23 deletions

View File

@ -346,25 +346,22 @@ tc
@ok
jsr init_block
bcs exit
; we are ok to read!
; check for new line mode...
ldy #fcr.newline_length
lda [my_fcr],y
beq normal_read
jsr build_nl_table
bcs normal_read
jsr slow_read
bcs exit
bcc done
rtl
normal_read
jsr init_block
_rts.cs
; currently limited to 7 zones, anyhow!
; first block may have extra work since it may be offset into a block.
@ -623,11 +620,24 @@ done
@fini
endm
;
; builds a new-line table, if necessary.
; returns:
; c = 1 if new_line mode enabled.
; c = 0 if new_line mode disabled.
build_nl_table procname
with dp, my_dp
with data
ldy #fcr.mask
lda [my_fcr],y
sta nl_mask
bne @yes
sec
rts
@yes
lda #0
ldx #256-2
zloop
@ -637,35 +647,35 @@ zloop
bpl zloop
ldy #fcr.mask
; newline list is a virtual pointer.
ldy #fcr.newline
lda [my_fcr],y
sta nl_mask
tax
iny
iny
lda [my_fcr],y
tay
jsl deref
stx ptr
sty ptr+2
ldy #fcr.newline_length
lda [my_fcr],y
tax
ldy #fcr.newline
lda [my_fcr],y
sta ptr
iny
iny
lda [my_fcr],y
sta ptr+2
txy
tay
dey
ldx #0
short m
nloop
lda [ptr],y
and nl_mask
;and nl_mask
tax
lda #$ff
sta nl_table,x
dey
bpl nloop
long m
clc
rts
endp
@ -678,7 +688,7 @@ slow_read procname
; first block may not be aligned.
jsr build_nl_table
;jsr build_nl_table
lda mark
and #1024-1
@ -769,6 +779,11 @@ bloop
iny
and nl_mask
; bit nl_mask+1 ; high bit set if 1-char nl
; bpl @table
; cmp nl_char
; beq @eol
;@table
tax
lda nl_table,x
bne @eol