File:Atari 800XL clock oscillator and reset circuit (FD100740 schematic).png
Summary
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Detail of the 800XL schematic in Atari's 800XL Computer Field Service Manual (FD100740 Rev. 01, February 1984), section 5. Right: the crystal oscillator, 2N3906 transistors Q8 and Q9 with crystal Y1 (drawn as the 3.546894 MHz U.K. part; note 2 of the schematic changes it to 3.579545 MHz for domestic units), R109-R114 and C109. Left: the power-on reset circuit, C49 (47 µF) charged from +5A through R39 (56 kΩ) with CR1 across R39, R40 (100 Ω) to the reset switch line, and two sections of the 74LS14 U19 (pins 11-10 and 9-8).
Source
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Rendered from File:Atari 800XL Computer Field Service Manual FD100740 Rev 01.pdf, PDF page 36, at 300 dpi and cropped.
Author
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Atari, Inc.
Licence
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Copyright Atari, Inc. Hosted for preservation and repair reference, with the source cited.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 11:06, 25 October 2026 | | 1,128 × 610 (42 KB) | Josh (talk | contribs) | Upload for repair guide |
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