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Apple ][ ThunderClock Plus Hardware Software Parts List Schematics
README.md |
Apple 2 Hardware Disassembly Project - Peripheral: ThunderClock Plus
== Parts List ==
- 1x 1990C (NEC uPD1990C K0Z02A)
- 1x 2708 (EPROM)
- 1x 74LS08 (Hitachi 0D4 8 / HD74LS08P), AND 4 channel, 296-1633-5-ND
- 1x 74LS27 (Hitachi 0F44 / HD74LS27P)
- 1x 74LS74 (Hitachi 0E3 T / HD74LS74AP)
- 1x 74LS109 (Hitachi OF2 4 / HD74LS109AP)
- 1x 74LS126 (Hitachi 0J3 4 / HD74LS126AP)
- 1x 74LS132 (Motorola SN74LS132N / I8015), NAND 4 channel, 296-3645-5-ND
- 1x 74LS174 (Hitachi 0D4 T / HD74LS174P)
- 1x CD4050 (Motorola MC14050B / CP QQ8014)
- B1 HOLDER BATTERY 1CELL N ALUMINUM DigiKey: 36-154-ND
- B2 HOLDER BATTERY 1CELL N ALUMINUM DigiKey: 36-154-ND
- C1 104Z (East)
- C2 104Z (East)
- C3 104Z (North)
- C4 104Z (North)
- C5 104Z (East)
- C6 104Z (North)
- C7 NPO 20J
- C8 variable
- CX ???
- D1 ??? M5?2? (Diode)
- D2 ??? N40-0 (Diode)
- R 1 Brown- Black- Orange Gold = 10 * 1K Ohm +/- 5%
- R 2 Yellow Violet Orange Gold = 47 * 1K Ohm +/- 5%
- R 3 Yellow Violet Orange Gold = 47 * 1K Ohm +/- 5%
- R 4 Yellow Violet Orange Gold = 47 * 1K Ohm +/- 5%
- R 5 Yellow Violet Orange Gold = 47 * 1K Ohm +/- 5%
- R 6 Orange Orange Red--- Gold = 33*100 Ohm +/- 5%
- R 7 Brown- Black- Orange Gold = 10 * 1K Ohm +/- 5%
- R 8 Yellow Violet Orange Gold = 47 * 1K Ohm +/- 5%
- R 9 Orange Orange Red--- Gold = 33*100 Ohm +/- 5%
- R10 Blue-- Orange Black Gold = 63 * 1 Ohm +/- 5%
- R11 Brown- Black- Orange Gold = 10 * 1K Ohm +/- 5%
- R12 Brown- Black- Green- Gold = 10*100K Ohm +/- 5%
- R13 Brown- Black- Green- Gold = 10*100K Ohm +/- 5%
- SW1 DIP SWITCH
- SW2 -- not installed --
- Q1 2N3904
- Q2 2N3904 ???
- Q3 2N3904
- Q4 2N3904 ???
- Y1 ???
Color | Digit | Multiplier |
---|---|---|
Black | 0 | 1 Ohm |
Brown | 1 | 10 Ohm |
Red | 2 | 100 Ohm |
Orange | 3 | 1K Ohm |
Yellow | 4 | 10K Ohm |
Green | 5 | 100K Ohm |
Blue | 6 | 1M Ohm |
Violet | 7 | 10M Ohm |
Grey | 8 | |
White | 9 | |
Gold | - | x 0.1 |
Silver | - | x 0.01 |
== Layout ===
- Component Side:
_______________________________________________________________________
| B2 B1 C8 SW1 ThunderClock Plus |
|R12 R13 Q4 Y1 C7 C4 Q1 |
| D2 1990C CD4050 74LS174 74LS08 74LS132 R1 |A
| Q3 Q2 R3 R2 |
| R4 |
| R11 R7 R5 Sw2 |
| |
| D1 74LS74 74LS109 74LS126 2708 C3 74LS27 |B
| R10 R9 R8 R6 C2 |
| C6 C5 C1 CX |
___________________________________________ ___|
|_|_|_|_|_|_|_|_|_|_|_|_|
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== Schematic ==
- TODO
== Questions ==
Due to missing or unlabeled parts some questions remain:
- What is Y1 ?
- What is CX ?
- What is D1 ?
- What is D2 ?
- What is Q2 ?
- What is Q4 ?