I recently attended a party which turned to a kind of a retro night. The essential ingredients included beer, sauna and an SVI-328 which we first used to play some old games and but after a while ended up coding "graphical" demonstrations in BASIC. :) Afterwards I started wondering if I could code something a bit more sophisticated for the machine and searched for information on the hardware. I naturally found most of the information I needed on Roger Samdal's page so I have to give my thanks to Roger and Tomas Karlsson too for providing all this data. :) But the problem is that even after searching through my Spectravideo tape image collection I didn't find a single assmebler to write the code with. Well actually I found one ("Assembler-Disassembler by AFHK-Games" on Joystick Collection #5) but it's written in Swedish and even though I think I understood the instructions I couldn't make any sense of it...

So the question is: Are there any good assembler tools for the SVI-328? I read some comments about "Zuper-80Assembler" and found a manual for it on Roger's site but the tool itself doesn't seem to be available on the web... I managed to write and assemble a Hello World program using a Windows-based tool called Z80 PC Assembler by Peter Hanratty but the process was a bit cumbersome as it involved typing the resulting machine code by hand to a BASIC program acting as a loader on the SVI-328.

The Zuper-80 Assembler by Dan Haggren is quite nice. I also have a couple others running under SVI-328 Disk Basic. I will contact Roger Samdal for an update of his website.

Check out it the CP/M Commercial Software Archive, for example the SLR Z-80 assembler. Copy the files using 22Nice.
http://www.retroarchive.org/cpm/

I personally prefer cross assemblers, like TASM (Telemark Cross Assembler), and using an emulator for the development. Then transfer it to a real computer using cassette, cartridge EPROM, disk or serial.

Johan Winge's WOS contains source for a cartridge setup
http://home.student.uu.se/jowi4905/index.php?lang=en&css=on&subj=svi