i own this one called pecom 32
it was a beast and 5 times faster than c64 & ZXspectrum
Um, no. It was not.
The ZX Spectrum had a z80 clocked at 3.5MHz (3.54Mhz in later models) which is in no way 5x slower than a 5Mhz RCA1802 in the Pecom 32. The RCA CPU had a minimum instruction timing of 8 clock cycles (with most instructions taking 16 or more due to the 16bit registers) vs the majority of z80 instructions coming in at 4 cycles excepting memory accesses that could take a further four cycles, which renders the speed on an instruction by instruction case of roughly half that of an equivalently clocked z80.
The C64 was clocked at 1MHz but had the advantage of zero-page register usage which meant that it could almost (but not quite!) compete with the z80 for 8bit operations - but 16bit operations were a lot slower as the z80 had native 16bit opcodes built-in.
The RCA CPU also had a single 8bit accumulator (as opposed to the z80's 16bit AF register pair) which meant that although it had a 16bit address bus, it only had an 8bit data bus which further slowed it down.
Compared to the dominant 8bit CPUs of the time (6502 and z80) the RCA in the Pecom 32 was a real sloth. It did have some nice features from a programming perspective, but they didn't make up for the fact that it was so very, very slow.
