Lawrence Walker wrote: The "Level" refers to the BASIC ROM that was installed in a TRS-80 Model 1 Keyboard/CPU. Level I was a 4k ROM with very limited features and command set that was fun to play with for a while. Level II was a 12k ROM with a reasonable Microsoft BASIC -- it was necessary if disks were to be added, as the hooks to the disk extensions were in it. Level I couldn't generally access the additional RAM in an Expansion Interface, either. The Model II is a strictly disk-based machine. The onboard ROM is a boot ROM to get an operating system loaded, the BASIC interpreter was entirely RAM resident. Being by Microsoft, Model 1 disk BASIC and Model II BASIC share about 98% of the same features, although the Model II didn't have things like direct access to the video RAM. -- Ward Griffiths Dylan: How many years must some people exist, before they're allowed to be free? WDG3rd: If they "must" exist until they're "allowed", they'll never be free.