Eventually, [Matt] stumbled across this awesome resource for 8051 programming. The 8051 featured a still reasonably respectable 4k of ROM and 128 bytes of RAM – not too dissimilar from an ...
FlashRunner™ In-System Programmer (ISP) line from SMH Technologies supports 8051s from CAST; Live 8051 programming demo running in CAST’s DAC booth Woodcliff Lake, NJ, USA and Villotta di Chions, ...
You’d probably get something like [ElectroBoy]’s 8051-based Arduino Uno ... No USB-UART (which also means no USB programming), a different pin layout (Arduino shields likely won’t fit ...