Hi!
I tried to load and automatic run program.
All can be ok, but after successful loading BASIC always prints:
?SYNTAX ERROR
In case of command RUN, GOTO...and some others.
Here's code of routine:
jsr bank // set bank to #15
lda enter.lenname
ldx #<enter.name
ldy #>enter.name
jsr setnam
lda #00
ldx #00
// jsr $ff68 - disabled bank change for I/O (works not also if is enabled)
lda #00
ldx device
ldy #00
jsr setlfs
lda #00
ldx $2d
ldy $2e
jsr $ffd5 // load routine
jsr $5aa6 // run routine
rts
Please help me somebody where can be error, why BASIC outputs
?SYNTAX ERR...
Many many thanks.
Miro
Hi Mirko,
your code-snippet doesn't have an error which could cause the 'syntax error' of the basic interpreter.
(the last statement can be changed to JMP $5aa6 as this routine does not return to your code anyway)
I suppose the error is displayed because the byte preceding the addr. $2d/$2e points to, is non-zero.
after power-on you have this:
1c00: 00 <- if this byte is non-zero you'll get a 'syntax error' no matter what command was entered
1c01: 00 <- here the basic start ($2d/2e) points to - will receive the first basic link-pointer
1c02: 00
wasn't this already covered in another post of yours ?