Some of my hardware releases have come about from requests, such as this 2-way ZX Spectrum Bus Expansion to let you connect two interfaces to your ZX Spectrum's edge connector. I've got a few made up in stock ready to ship.

https://zx.samcoupe.com

https://www.ebay.co.uk/itm/117126582070

For all the other hardware I produce:

SAM Coupe (magazines and software too!)
https://www.samcoupe.com

Peripherals for RC2014 and compatibles:
https://2014.samcoupe.com

#electronics #zxspectrum #samcoupe #rc2014 #retrocomputing #retrogaming

RE: https://oldbytes.space/@electron_greg/116409619073557779

Who's going to be the first to publish #RC2014 timings?

Tested various micros running this program. It derives Pi to 20 decimal places. Interesting stats.

1 N=20: L=INT(10*N/3): DIM A(255): Z$="000000":T$="999999"
2 FOR I=1 TO L: A(I)=2: NEXT I: M=0: P=0: FOR J=1 TO N: Q=0: K=2*L+1
3 FOR I=L TO 1 STEP -1: K=K-2: X=10*A(I)+Q*I: Q=INT(X/K): A(I)=X-Q*K: NEXT I
4 Y =INT(Q/10): A(1)=Q-10*Y: Q=Y: IF Q=9 THEN LET M=M+1: GOTO 7
5 IF Q=10 THEN PRINT STR$(P+1);LEFT$(Z$,M);: P=0: M=0: GOTO 7
6 PRINT STR$(P);LEFT$(T$,M);: P=Q: M=0
7 NEXT J:PRINT STR$(P)

#RC2014 : 14 (thank you JonV)
#BBCMicro : 19
#AmstradCPC : 22 (thank you Devlin)
#AcornElectron : 25
#C128 : 27 (fast mode - thank you Jonas H)
#VIC20 : 36
#CBMPET : 43
#C64 : 43
#Dragon32 : 44
#C16 : 46
#Altair8800 : 52
#C128 : 56 (default "mode")
#ZX80 : 57
#ZXSpectrum : 68 (thank you Adam)

Edit: now ordered (seconds)

Who had “New OS for the Z80” On Their 2026 Bingo Card?

https://fed.brid.gy/r/https://hackaday.com/2026/04/12/who-had-new-os-for-the-z80-on-their-2026-bingo-card/