CPC Expansion Port
EXPANSION: 50 way Delta range.
1 Sound 2 GND 3 A15 4 A14 5 A13 6 A12 7 A11 8 A10 9 A9 10 A8 11 A7 12 A6 13 A5 14 A4 15 A3 16 A2 17 A1 18 A0 19 D7 20 D6 21 D5 22 D4 23 D3 24 D2 25 D1 26 D0 27 VCC 28 *MREQ 29 *M1 30 *RFSH 31 *IORQ 32 *RD 33 *WR 34 *HALT 35 *INT 36 *NMI 37 *BUSRQ 38 *BUSAK 39 READY 40 *BRST 41 *RSET 42 *ROMEN 43 ROMDIS 44 *RAMRD 45 RAMDIS 46 CURSOR 47 LPEN 48 *EXP 49 GND 50 CLK4
KC Compact Expansion Port
The KC Compact has 58pin, special-type connector
1B +12V (20mA max) 29B ............................. 1B 1A +20V 29A ............................. 1A 2B Same as CPC Pin1 (SOUND) 2A Same as CPC Pin2 (GND) .. Same as CPC Pin3..48 (see there) 26B Same as CPC Pin49 (GND) 26A Same as CPC Pin50 (4MHz) 27B FBAS Video Output 27A PIO /TEST ;\ 28B Printer Bit1 ; 28A Printer Bit0 ; for TEST mode (remote-network-boot) 29B Printer /Strobe ; 29A Printer Bit6 ;/
Expansion Port on Aleste 520EX Expansion Port
The Aleste 520EX has a 62pin, male edge connector.
A1..A25 Same as <odd> CPC Pins 1..49 (ie. SOUND, A15, A14, etc.) B1..B25 Same as <even> CPC Pins 2..50 (except B20=NC, instead /BUSRESET) A26 MAP14 B26 MAP15 A27 MAP16 B27 MAP17 A31___________________A1 A28 MAP18 B28 MAPBLK |___________________| A29 /INTA B29 /DISP B31 B1 A30 Agnd B30 /CPU A31 Aucc B31 HIGH
Most of the extra pins are DMA related. The Aucc/Agnd pins are meant to be smoother voltages then VCC/GND (for use with Audio expansions).
Amstrad PCW
The Amstrad PCW has a 50-pin Expansion port, too. But it's pin-outs are entirely different as on CPC.