Component specification - Polysix MIDI retrofit
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(c) Copyright 1997 Ricard Wolf

All resistors are 5% 1/8 W unless otherwise noted.
All capacitors are 10% polyester unless otherwise noted.

CPU board
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1x Z80A CPU
1x 6264LP-15 (150ns or less)
1x 2764 (200ns or less)
1x 6850
2x 8255

2x 74LS393
1x 74LS139
1x 74LS04
1x 74LS00

1x TIL111
1x 1N4148

5x 220R
2x 1k
2x 4k7
4x 4k7x8 resnet

1x 1nF
12x 10nF
1x 220uF/16V electrolytic

1x Xtal 8MHz

1x 14 pin DIL socket (for MIDI connectors)
1x 28 pin DIL socket (for EPROM)

2x 40 pin DIL headers (for connection to the 8048 and 8049 sockets)
1x 14 pin DIL header (for MIDI connectors)

40-pole ribbon cable (for connection to the 8048 and 8049 sockets)
10-pole ribbon cable (for connection between the CPU board and MIDI connectors)

160x100 mm copperless veroboard


S/H board
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1x TL072
1x CA3080E
1x BC557 or any other general purpose silicon PNP transistor

3x 10k
1x 22k
2x 33k
1x 220R
1x 330k
1x 100k miniature trimpot

2x 47nF

Small piece of veroboard

8-pin strip connector
8-pin wired connector for the above


Miscellaneous
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3x 5-pole DIN connectors (including 6x M3 screws and nuts)

1mm piano wire for mounting the CPU board

4x wood screws and 5mm distances for mounting the S/H board