[Coco] 64K Coco mode and the MC6883

[Patrick Ulland]

On 3/28/2023 3:11 PM, Allen Huffman via Coco wrote:
> (VARPTR) is a very cool trick. I do not think I ever used it, but I wish I would have done that for my ALLRAM BBS PCLEAR0 code, rather than POKEing it to the screen and EXEC 1024 on startup.

A semi-universal method for any amount RAM in any machine using 
microsoft(ish) basic, from CoCo, Pet, MSX, didn't VBA even have VarPtr?

Originally magazine code, perchance?