figForth and serial communication?

Kande Laber

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May 5, 2025, 10:35:43 AMMay 5

to PAL 6502 computer

Hi everybody,

I just soldered my PAL-1 ROM extension.
Tested it with figForth.

Basically it works (see minicom output below).

But when invokeing "VLIST" I get these "�" at the end of each word (see also below).

Any idea how to fix that?

Best regards

---------------------- minicom output ----------------------

KIM

A000 4C g

A001 0F A000

A000 4C G

PAL-1 ROM Loader v1.0

(B)ASIC, (F)ORTH, eWo(z) Monitor, or e(X)it? F

Starting FIG FORTH...

fig-FORTH 1.1

: CUBE DUP DUP * * . ;

OK

3 CUBE

27 OK

4 CUBE

64 OK

VLIST

CUB� MO� VLIS� TRIA� INDE� LIS� � � .� D� D.�

#� � SIG� #� <� SPACE� WHIL� ELS� I� REPEA� AGAI�

EN� UNTI� +LOO� LOO� D� THE� ENDI� BEGI� BAC� FORGE�

Hans Otten

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May 5, 2025, 11:07:56 AMMay 5

to PAL 6502 computer

Set your terminal emulator to 7 bit.
This looks like the 8 bit is set on strings to indicate end of string.

There should be a AND $7F added to the output routine of figforth source.

Kande Laber

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May 8, 2025, 2:15:48 AMMay 8

to PAL 6502 computer

Thanks a lot. 7 bit works.

Looking at the source code of figForth, I kind of understand, why "a AND $7F" was NOT added to the output routine.

Because this would cripple the historical code and this may harm the retro feeling.

Seems that retro people many times have to do this trade offs.

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