mirror of
https://github.com/Michaelangel007/apple2_thunderclock.git
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100 lines
3.3 KiB
Markdown
100 lines
3.3 KiB
Markdown
# Apple 2 Hardware Disassembly Project - Peripheral: ThunderClock Plus
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# == Parts List ==
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* 1x 1990C (NEC uPD1990C K0Z02A)
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* 1x 2708 (EPROM)
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* 1x 74LS08 (Hitachi 0D4 8 / HD74LS08P)
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* 1x 74LS27 (Hitachi 0F44 / HD74LS27P)
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* 1x 74LS74 (Hitachi 0E3 T / HD74LS74AP)
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* 1x 74LS109 (Hitachi OF2 4 / HD74LS109AP)
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* 1x 74LS126 (Hitachi 0J3 4 / HD74LS126AP)
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* 1x 74LS132 (Motorola SN74LS132N / I8015)
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* 1x 74LS174 (Hitachi 0D4 T / HD74LS174P)
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* 1x CD4050 (Motorola MC14050B / CP QQ8014)
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* B1 HOLDER BATTERY 1CELL N ALUMINUM DigiKey: [36-154-ND](http://www.digikey.com/product-detail/en/keystone-electronics/154/36-154-ND/61790)
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* B2 HOLDER BATTERY 1CELL N ALUMINUM DigiKey: [36-154-ND](http://www.digikey.com/product-detail/en/keystone-electronics/154/36-154-ND/61790)
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* C1 104Z (East)
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* C2 104Z (East)
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* C3 104Z (North)
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* C4 104Z (North)
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* C5 104Z (East)
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* C6 104Z (North)
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* C7 NPO 20J
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* C8 variable
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* CX ???
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* D1 ??? M5?2? (Diode)
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* D2 ??? N40-0 (Diode)
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* R 1 Brown- Black- Orange Gold = 10 * 1K Ohm +/- 5%
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* R 2 Yellow Violet Orange Gold = 47 * 1K Ohm +/- 5%
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* R 3 Yellow Violet Orange Gold = 47 * 1K Ohm +/- 5%
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* R 4 Yellow Violet Orange Gold = 47 * 1K Ohm +/- 5%
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* R 5 Yellow Violet Orange Gold = 47 * 1K Ohm +/- 5%
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* R 6 Orange Orange Red--- Gold = 33\*100 Ohm +/- 5%
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* R 7 Brown- Black- Orange Gold = 10 * 1K Ohm +/- 5%
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* R 8 Yellow Violet Orange Gold = 47 * 1K Ohm +/- 5%
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* R 9 Orange Orange Red--- Gold = 33\*100 Ohm +/- 5%
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* R10 Blue-- Orange Black Gold = 63 * 1 Ohm +/- 5%
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* R11 Brown- Black- Orange Gold = 10 * 1K Ohm +/- 5%
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* R12 Brown- Black- Green- Gold = 10*100K Ohm +/- 5%
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* R13 Brown- Black- Green- Gold = 10*100K Ohm +/- 5%
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* SW1 DIP SWITCH
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* SW2 -- not installed --
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* Q1 2N3904
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* Q2 2N3904 ???
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* Q3 2N3904
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* Q4 2N3904 ???
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* Y1 ???
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|Color |Digit|Multiplier|
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|:------|:---:|---------:|
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|Black | 0 | 1 Ohm |
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|Brown | 1 | 10 Ohm |
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|Red | 2 | 100 Ohm |
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|Orange | 3 | 1K Ohm |
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|Yellow | 4 | 10K Ohm |
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|Green | 5 | 100K Ohm |
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|Blue | 6 | 1M Ohm |
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|Violet | 7 | 10M Ohm |
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|Grey | 8 | |
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|White | 9 | |
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|Gold | - | x 0.1 |
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|Silver | - | x 0.01 |
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# == Layout ===
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* Component Side:
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```
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_______________________________________________________________________
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| B2 B1 C8 SW1 ThunderClock Plus |
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|R12 R13 Q4 Y1 C7 C4 Q1 |
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| D2 1990C CD4050 74LS174 74LS08 74LS132 R1 |A
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| Q3 Q2 R3 R2 |
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| R4 |
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| R11 R7 R5 Sw2 |
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| D1 74LS74 74LS109 74LS126 2708 C3 74LS27 |B
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| R10 R9 R8 R6 C2 |
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| C6 C5 C1 CX |
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___________________________________________ ___|
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|_|_|_|_|_|_|_|_|_|_|_|_|
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1 25
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```
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# == Schematic ==
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* [ ] TODO
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# == Questions ==
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Due to missing or unlabeled parts some questions remain:
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* What is Y1 ?
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* What is CX ?
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* What is D1 ?
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* What is D2 ?
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* What is Q2 ?
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* What is Q4 ?
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