[GregoryFul]

The basic TRS80 had 64k, and upgrade 128k as I remember. I used Forth on mine. It was quite snappy.

[Nowhere Man]

The basic TRS80 had 64k, and upgrade 128k as I remember. I used Forth on mine. It was quite snappy.

I know you cna go to 64K on those with the expansion box and the Model III's and Model 4's could go that high too, the Model 4 already had 64K IIRC. Mr George had one in our high school class as a network controller although he had a 64K Model III in the beginning. My Apple //e has 128K of RAM but used bank switching since ith ad an 8-bit microprcessor and I think the TRS-80 did a similar thing since 8-bits can only address 64K of RAM. Did you use TRSDOS on yours?