NO IT WAS NOT. LEVEL-I basic was the same basic sold by gates for the altair just a later revision level. IT was little, it ws limited but to did have floating point math and a few otehr things not found in tiny basics of the time. Tiny BASIC was one of several basics that were integer math only and far more limited and generally smaller too. Once upon a time there were three basics from MS, 4k, 8k, 12k extended, disk (~23k), and compiled(bascom). L1 was 4k and LII was the 12k extended with mods. It was never memory speed it was ras/mux/cas timing that was marginal. after about late 79 the design was substantually changed to derive the signals loacally in the EI. stacking 32k more in the keyboard was a trivial task. IF you didn't mind staking the chips three high and skywiring the cas/ lines for the added chips to a decoder. It did work well. The RS card worked excellent if the connector did! INthe trs 80 case some of it was the lack of decision making by other than marketing/sales types. I was there from 74-79 and helped launch and fix the trs80 Generally speaking all audio cassette interfaces were poor. Some were poorer than others. I'd tried digital (saturation recording) using a modified trs80(all the analog gone) and it was absolutely reliable. The recorder electronics were no more complicated than athe audio just different. The first year of sales exceeded 250,000! The percom design existed at least a year before the design was started. It was straight out of the wd1771 data sheet!