View source for Amstrad PCW Expansion Port

[[Amstrad PCW Expansion Port]], similar to, but not pin-compatible with the [[Connector:Expansion port|CPC Expansion Port Connector]].

PCW Expansion Schematic

This document was taken from a Usenet posting by Stephen Dunbar.

 1  Not connected
 2  Not connected
 3  0V
 4  0V
 5  +5V
 6  +5V
 7  Not connected
 8  +12V
 9  A14
 10 A15
 11 A12
 12 A13
 13 A10
 14 A11
 15 A8
 16 A9
 17 A6
 18 A7
 19 A4
 20 A5
 21 A2
 22 A3
 23 A0
 24 A1
 25 D6
 26 D7
 27 D4
 28 D5
 29 D2
 30 D3
 31 D0
 32 D1
 33 RESET*
 34 M1*
 35 BUSRQ*
 36 INT*
 37 BUSAK*
 38 WAIT*
 39 WR*
 40 MREQ*
 41 RD*
 42 IOREQ*
 43 Not connected
 44 NSYNC
 45 MDIS*
 46 VIDEO
 47 32MHz*
 48 Z80CLK* (4MHz)
 49 0V
 50 0V

The expansion port on PCWs sold in the US is a 50-position female Amphenol connector. On UK models, it is a simple edge connector (concealed underneath a plastic cover on PCW10s).

Edge connector layout, looking from the rear:


  Top
      N/C ( 1) [] (2) N/C
      0v  ( 3) [] (4) 0v
     +5v  ( 5) [] (6) +5v
      N/C ( 7) [] (8) +12v
      A14 ( 9) [] (10) A15
      A12 (11) [] (12) A13
      A10 (13) [] (14) A11
       A8 (15) [] (16) A9
       A6 (17) [] (18) A7
       A4 (19) [] (20) A5
       A2 (21) [] (22) A3
       A0 (23) [] (24) A1
       D6 (25) [] (26) D7
       D4 (27) [] (28) D5
       D2 (29) [] (30) D3
       D0 (31) [] (32) D1
    RESET (33) [] (34) M1
    BUSRQ (35) [] (36) INT
    BUSAK (37) [] (38) WAIT
       WR (39) [] (40) MREQ
       RD (41) [] (42) IORQ
      N/C (43) [] (44) NSYNC
     MDIS (45) [] (46) VIDEO
  3.2 MHZ (47) [] (48) 4 MHZ Z80 clock
       0v (49) [] (50) 0v


[[Category:PCW]]