ML Monitor and assembler

shem · Post by **shem** » Sun Dec 28, 2008 2:05 pm

Can anyone suggest a good assembler and ML monitor for the vic 20 and possibly a place where i can download it??

Thanks
Shem

Richard James · Post by **Richard James** » Sun Dec 28, 2008 6:44 pm

Do you want one that is a cartridge and thus works on the VIC or do you want one that is a program that can run on the PC.

On a PC you can use DASM
http://dasm-dillon.sourceforge.net/

On the VIC there is some stuff on Zimmers
http://www.zimmers.net/anonftp/pub/cbm/ ... index.html

nbla000 · Post by **nbla000** » Mon Dec 29, 2008 3:45 am

I use DASM to program and the VICE monitor in emulation for tests both for windows.

zutman · Post by **zutman** » Mon Dec 29, 2008 2:31 pm

I use the acme 6502 assembler on linux. It's simple to compile from source and for windows it comes pre-compiled.

http://www.esw-heim.tu-clausthal.de/~ma ... brod/acme/

And ofcourse VICE for testing. Transfer to the real VIC trough my U1541.

shem · Post by **shem** » Tue Dec 30, 2008 9:17 am

Thanks for your replies guys...

shem · Post by **shem** » Tue Dec 30, 2008 5:29 pm

Ok i have downloaded vicmon which works and lads assembler but after attaching the file to xvic (winvice 2.1 ) ans sys48641 it doesnt work
could anyone point me in the right direction? (possibly off the side of a cliff)

Thanks
Shem

eslapion · Post by **eslapion** » Tue Dec 30, 2008 5:57 pm

shem wrote:Ok i have downloaded vicmon which works and lads assembler but after attaching the file to xvic (winvice 2.1 ) ans sys48641 it doesnt work
could anyone point me in the right direction? (possibly off the side of a cliff)

LADS is not a cartridge image and therefore you can't "attach" it.

You put RAM in BLK5 and you load it which allows it to place itself at the right address (which is NOT $A000) then SYS it.

shem · Post by **shem** » Tue Dec 30, 2008 6:05 pm

Can I not auto attach tape/disk image? after all winvice accepts prg files

eslapion · Post by **eslapion** » Tue Dec 30, 2008 9:57 pm

shem wrote:Can I not auto attach tape/disk image? after all winvice accepts prg files

LADS is not a tape or disk image.

You can attach PRG files as cartridge images IF and only IF they begin at the start address of memory areas BLK 1, 2, 3 or 5.

LADS is a PRG file but it is NOT a cartridge image and it does NOT start at the beginning of a BLK area. It has to be LOADed like any ML program and then SYSed to start.

Mike · Post by **Mike** » Wed Dec 31, 2008 8:14 am

eslapion wrote:LADS is a PRG file but it is NOT a cartridge image[...]

... and while one could save complete BLK5 as *.prg, and strip the first two bytes to make LADS attachable as "cartridge" image, it wouldn't work anymore - as LADS performs writes into the BLK5 area.

Michael

eslapion · Post by **eslapion** » Wed Dec 31, 2008 2:55 pm

Mike wrote:... and while one could save complete BLK5 as *.prg, and strip the first two bytes to make LADS attachable as "cartridge" image, it wouldn't work anymore - as LADS performs writes into the BLK5 area.

That's good to know. Some people asked me to provide LADS as a ROM option to the Ultimate Expander and for some reason, it didn't work when I tried it on an erasable chip.

Now I know why.

shem · Post by **shem** » Wed Dec 31, 2008 3:25 pm

Ok now I understand

I have managed to find a listing of LADS all i have to do is type it in
It's been awhile since i had to do that well over 20 years actually

eslapion · Post by **eslapion** » Thu Jan 01, 2009 4:09 am

shem wrote:Ok now I understand

I have managed to find a listing of LADS all i have to do is type it in
It's been awhile since i had to do that well over 20 years actually

Type it in? That's a very long and tedious job!

Why not simply LOAD the file that's on Zimmer's ?

Mike · Post by **Mike** » Thu Jan 01, 2009 7:06 am

It is quite useful, maybe even essential for a hosted assembler, if it comes with its own source code, so that it can be easily relocated.

For example, the current file wouldn't allow for any object code, that ends up in BLK5, possibly overwriting LADS. With the source, you can lift up the start of BASIC programs from $1201 to ~$2400, and place LADS inbetween.

shem wrote:I have managed to find a listing of LADS

Where did you find the listing? Is it a scanned document or a text file?

Michael

shem · Post by **shem** » Thu Jan 01, 2009 10:35 am

First of all I would like to wish everyone a very happy new year

@Eslapion
I would love to load it in but i have to type it in as its in a book
besides we have it farr to easy these days if i type it in to the real vic it might help me to understand how Lads works

@Mike

The book is called The Second Book Of Machine Language
The book is a Compute Books publication
and if my memory serves me right gklinger has donated it to me some time ago

Thanks Golan

I am sure this book is on line somewhere already in text format ready to copy and paste

Denial

ML Monitor and assembler

ML Monitor and assembler

Re: ML Monitor and assembler

Lads assembler

Re: Lads assembler