Re: MULTIFLEX EPROM pgmr <-- anyone remember these?

[Gilles Tschopp <gilles.tschopp@esis.vsnet.ch>]

Doug Manzer wrote:
> 
> They were made in Toronto, Ontario, Canada -- Multiflex
> must have cranked out thousands of these things back in
> the 80's. They came with software that ran under DOS 3.3.
> My question: is there anything special I need to do
> if I want to convert the software to ProDos?

You can convert your software from Dos3.3 to ProDOS but there 
are some problems !

1. For Basic software, you should check Dos3.3 commands and 
remove the CHR$(13) before the CHR$(4). A well-designed Basic 
program should have like this at beginning :
	D$ = CHR$(13) + CHR$(4)	 	for Dos3.3

You can just change to it :
	D$ = CHR$(4)

Otherwise ProDOS won't recongize the commands.

2. For BIN files, there is pretty more complicated. ProDOS can 
allow you to load them only between $800-$9600 addresses, 
otherwhise you will get the "NO BUFFER AVAILABLE" error. 

The ampersand (&) routines written under Dos3.3 don't often work 
under ProDos. You will have to correct and recompile them if you 
have, of course, the sources ...

The BIN routines, like old games which are loaded once in 
memory, can work under ProDOS only if they don't use Dos3.3 
routines.

It isn't really easy to convert Dos3.3 apps to ProDOS. If you 
havnen't sources, you have better to let them as they are. It 
requires too much work. I have experienced and can tell you that 
it isn't quite easy !!!

Best regards,

Gilles Tschopp
-- 
-------------------------------------------
Gilles Tschopp, Informaticien de gestion ES
gilles.tschopp@esis.vsnet.ch
http://icare.itech.ch