In SX Microcontrollers, SX/B Compiler and SX-Key Tool, richwhip wrote:

Sorry to take so long, but I've been away from the work bench a few days.  I tried the HS2 and a new proto 48 board and results are identical.  Blinks a while the goes in to lala land.  Has anyone used the proto 48 board at 50 MHz?  I'm beginning to wonder.  From my old micro days I would suspect power supply noise, maybe inadequate bypassing.  It seems to run OK at 4MHz internal and at 20Mhz HS2.

FYI I am the original author of Tiny BASIC - Dr. Dobb's Journal from way back when.  As a "fun" exercise I have Tiny BASIC running on the SX-28 with a UART interface to Hyper Terminal.  I squeezed it into the 2k program memory with 256 bytes to spare for the Tiny BASIC program (not in RAM as originally).  Works fine and lots of fun.  My idea was to move to the SX-48 platform and gain both program and data memory, but its erratic behavior has stalled the project.  I know this all sounds like an academic exercise, but I figured some people might be interested, even for purely nostalgic reasons.  Anyway, thanks for you help.

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