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8-Bit Software

The BBC and Master Computer Public Domain Library

Mapped Master Compact Motherboard

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Master Compact #IC1#IC10#IC11#IC12#IC13#IC14#IC15#IC16#IC17#IC18#IC19#IC2#IC20#IC21#IC22#IC23#IC24#IC25#IC26#IC27#IC28#IC29#IC3#IC30#IC31#IC32#IC33#IC34#IC35#IC36#IC37#IC38#IC39#IC4#IC40#IC41#IC42#IC43#IC44#IC45#IC46#IC47#IC48#IC49#IC5#IC6#IC7#IC8#IC9#PL1#PL11#PL12#PL13#PL2#PL6#PL8#SKT1#SKT2#SKT4#SKT5#SKT6#SKT7#SKT8#SKT9
 
 

IC1

DM74LS174N

IC2

SN7406N

IC3

DM7438N

IC4

M74LS244P

IC5

Socket

IC6

WD1772
Disc Controller

IC7

G65SC22P-1 8641

IC8

74F74N

IC9

Socket

IC10

74S04N

IC11

SN74LS373N

IC12

SN74LS139AN

IC13

Socket

IC14

Socket

IC15

SAA5050

IC16

VC2069 201647

IC17

Rom Socket

IC18

SN74ALS00AN

IC19

M74LS14P

IC20

SN74LS86AN

IC21

74LS02N

IC22

CF30050

IC23

Rom Socket

IC24

PCD8572

IC25

G65SC22P-1 8641

IC26

CF30049

IC27

74F00N

IC28

G65SC12P-2

IC29

Rom Socket

IC30

SN76489AN

IC31

M74LS259P

IC32

M74LS156P

IC33

M74LS251P

IC34

HD46505SP

IC35

MB81464-12

IC36

MB81464-12

IC37

M74LS257AP

IC38

Rom Socket

IC39

CD74HCT253E

IC40

CD74HCT253E

IC41

MB81464-12

IC42

LM386-1

IC43

SN74ALS163BN

IC44

M74LS156P

IC45

SN74HC30N

IC46

CF30048

IC47

MB81464-12

IC48

CF30058

IC49

System Rom

PL1

Audio Socket

PL2

Power Socket

PL6

Keyboard Socket

PL8

Joystick Socket

PL11

Link

PL12

Link

PL13

Expansion Connector

SKT1

Disc Drive

SKT2

Printer

SKT4

Econet Connector

SKT5

Econet Connector

SKT6

Econet DIN Socket

SKT7

RS 232 DIN Socket

SKT8

Video Out

SKT9

RGB DIN Socket


Disc Drive Cable Adaptor

 It is possible to adapt an existing disc drive cable to fit into the Master Compact disc drive plug. Here are a couple of photographs that illustrate where to clamp the 'D' type plug on instead of the IDC type that is required for a BBC or Master 128, Note the position of pin 1, the red edge of the cable:

 
 
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