TheBackShed.com

Forum Index : Microcontroller and PC projects : CMM2: Undocumented (?) limit on number of items in a DATA statement

Author

Message

thwill

Guru

Joined: 16/09/2019
Location: United Kingdom
Posts: 4311

Posted: 01:24pm 05 Sep 2020

Copy link to clipboard

Print this post

This was perplexing me whilst porting some BBC BASIC code.

Try this on for size:

Colour Maximite 2
MMBasic Version 5.05.05
Copyright 2011-2020 Geoff Graham
Copyright 2016-2020 Peter Mather

> list "test.bas"
Dim x
For i = 1 To 32
Read x
Print x;
Next i
Data 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5

> run "test.bas"
Error in line 3: Syntax

The DATA line has 33 items, if you reduce it to 32 then it works.

Best wishes,

Tom

MMBasic for Linux, Game*Mite, CMM2 Welcome Tape, Creaky old text adventures

CaptainBoing

Guru

Joined: 07/09/2016
Location: United Kingdom
Posts: 2170

Posted: 02:02pm 05 Sep 2020

Copy link to clipboard

Print this post

works fine on a stock micromite

> RUN
5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
> ? mm.device$
Micromite MkII
>

Chopperp

Guru

Joined: 03/01/2018
Location: Australia
Posts: 1097

Posted: 02:23pm 05 Sep 2020

Copy link to clipboard

Print this post

Try using RESTORE first to reset the DATA pointer.

Brian

ChopperP

thwill

Guru

Joined: 16/09/2019
Location: United Kingdom
Posts: 4311

Posted: 02:39pm 05 Sep 2020

Copy link to clipboard

Print this post

Chopperp said Try using RESTORE first to reset the DATA pointer.

Brian

RESTORE makes no difference, and it shouldn't, the DATA pointer should already be set to the first piece of data if READ has never been called.

Best wishes,

Tom

MMBasic for Linux, Game*Mite, CMM2 Welcome Tape, Creaky old text adventures

matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 10315

Posted: 02:43pm 05 Sep 2020

Copy link to clipboard

Print this post

Check the MMBasic implementation details in the manual and then split the data statement

thwill

Guru

Joined: 16/09/2019
Location: United Kingdom
Posts: 4311

Posted: 02:54pm 05 Sep 2020

Copy link to clipboard

Print this post

matherp said Check the MMBasic implementation details in the manual and then split the data statement

Ever cryptic

this section is a (relatively) recent addition to the manual and not present in the version I was referencing.

p46, Maximum number of arguments to commands that accept a variable number of arguments is 32

Thanks,

Tom

MMBasic for Linux, Game*Mite, CMM2 Welcome Tape, Creaky old text adventures

Print this page

To reply to this topic, you need to log in.