Altair 8800 with 2SIO trying to get 8K basic to load

[17-again]

So, I've been playing around with my Altair. I have a new 88-2SIOJP card installed working 32K RAM card and I can load 4K 3.2 basic from these directions here: https://www.solivant.com/oldstuff/?ps=Old+Computers&pn=1 I use sense switches A11 and A10. Auto detect of RAM size shows 29K free when loaded.

However, when I mod the bootloader for 8K and try and load 8K basic 4.0 it just does not load. I've tried a few combos, gone thru the BASIC manual. The manual says to use A12 with A9 and A8 up for the 2SIO and I tried that, can't get it to load. Tried 110 baud, nothing seems to work. I've spent hours now, trying to find the right combo of file/bootloader/switch settings to work.

Does anybody have a working basic, with bootloader and steps for my setup?

 

[17-again]

Figured it out, thanks to altairclone.com site I found all the 2SIO bootloaders for all the basic versions! I have Disk basic loaded but with only 32K I am limited. Need more RAM!

 

[smp]

I'm not sure that I can be of much help with your particular situation, but there is a tremendous amount of information and code for the Altair on DeRamp.com:

https://deramp.com/altair.html

That fellow has also created a large amount of videos about using the Altair, available here:

https://www.youtube.com/playlist?lis...0cD1dhX35wILBj

Give that stuff a look, and perhaps you can get some ideas or assistance there.

Good luck!

smp