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23 September 2026
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04:24 | Atari 800XL 2 changes history +4,531 [Josh (2×)] | |||
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04:24 (cur | prev) +24 Josh talk contribs (Add connector reference designators (J4, J5/J6, J7, J8) from Atari's parts list) | ||||
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04:08 (cur | prev) +4,507 Josh talk contribs (Rewritten against the Atari 800XL Field Service Manual: +5 V only through a 7-pin DIN, +/-2%, 1.2 A max, no +12 V rail and no on-board regulator; ROM corrected to 24 KB (16 KB OS + 8 KB BASIC); full IC location map with '(not used)' positions flagged; monitor jack output levels added; corrected the garbled '256 hues x 16 luminance' palette text; real <ref> citations) | ||||
| 04:23 | Atari Portfolio diffhist +3,305 Josh talk contribs (Rewritten against Atari's Portfolio Technical Reference Guide: 128 KB is four 32 KB SRAMs and 256 KB ROM is two 128 KB devices, 4 KB of RAM mapped at B000h as video RAM, 63-key switch-matrix keyboard, 60-pin expansion port, 6x8 character cell, software-controlled contrast; power documented properly (three AA cells stepped UP to 5 V, 5VS 40 mA at 5 V +/-5%, VRAM 4.5 V, VEXT, BATD, four power modes); lithium cells are inside the memory cards; corrected weight to 433 g and dimensions to 26 x 197...) | ||||
| 04:13 | Atari 65XEP diffhist −1,387 Josh talk contribs (Rewritten to what the January 1985 announcement actually said (5-inch monochrome CRT with two character sizes, built-in microfloppy, around US$500); removed the unsourced green-phosphor screen, battery pack and detachable-keyboard claims; bare-URL reference list converted to <ref> citations) | ||||
| 04:13 | Atari 65XEM diffhist −610 Josh talk contribs (AMY range corrected from '11 octaves' to 10.75 octaves, 4.8 Hz to 7.8 kHz, with sampling rate, dynamic range and clock, all from Creative Computing March 1985; team corrected (Steve Saunders added as co-architect, Jack not John Palevich, Nicolino did the single-chip implementation); removed the old-computers.com spec table including the wrong '1 A, 5 V' power figure; bare-URL reference list converted to <ref> citations) | ||||
| 04:13 | Atari 1450XLD diffhist −97 Josh talk contribs (Corrected the speech chip (SC-01 on the 1400XL, SC-02 on the 1984 1450XLD redesign), added the Dynasty and TONG board codenames, the WD2797 parallel disk controller and its 100 KB/s figure, the 2 July 1984 cancellation and the 800XLD/1650XLD/1850XLD context; added the power-supply warning; bare-URL reference list converted to <ref> citations) | ||||
| 04:13 | Atari 1400XL diffhist +95 Josh talk contribs (Corrected the announcement from 'Winter CES January 1983' to June 1983 (Atari Museum), added the 1201XL/1250XL original designations, added the documented warning that a standard XL/XE power supply destroys the speech chip and GTIA, removed unverifiable prototype specifications; bare-URL reference list converted to <ref> citations) | ||||
| 04:13 | Atari 65XE (Poland) diffhist +1,381 Josh talk contribs (Rewritten with a real source (Atariki, with its Komputer/Bajtek/Moje Atari bibliography): LDW founded 1983 not 1987, P.Z. Karen ran Atari service in Poland, over 160,000 Atari units reached the market through it; removed the unsourced four-motherboard-revisions claim and replaced it with Atari's three documented 65XE assemblies; bare-URL reference list converted to <ref> citations) | ||||
| 04:11 | Atari XE Game System diffhist +1,608 Josh talk contribs (Rewritten against Atari's C100417 schematic and Antic Aug 1988: two 64K x 4 DRAMs not eight 4464s; keyboard connector is a standard DB15, not a proprietary ribbon; power is a 7-pin DIN J7 not a centre-positive barrel jack; 100,000 units is the Christmas 1987 US launch-season figure, now cited; removed unsourced $149.95/$79.95 prices and 'Active active connector' text; added XG-1 light-pen register behaviour and the duplicate-designator warning) | ||||
| 04:11 | Atari 800XE diffhist +499 Josh talk contribs (Rewritten against the XE-series Field Service Manual: corrected board table (Atari documents the 65XE and 800XE jointly as CA200519 with two 64K x 4 DRAMs; CO70067 is a 130XE board), removed unverifiable FREDDIE/ANTIC/GTIA part numbers and unsourced market claims, added power, SIO and monitor-jack facts) | ||||
| 04:11 | Atari 130XE diffhist +3,700 Josh talk contribs (Rewritten against the XE-series Field Service Manual and Antic July 1985: removed stray 'active accent' text, corrected board-assembly table (CO70065/CO70067, CO70050 SECAM, C103579/CA200519), documented the four bank-switching modes and ECI pinout, MMU1 C061618 / MMU2 C025953, 1.2 A at 5 V machine requirement vs 1.5 A brick rating, SIO pin 10 ready / pin 12 unused; removed unsourced price and unverifiable PAL chip part numbers) | ||||
| 04:11 | Atari 65XE diffhist +4,929 Josh talk contribs (Rewritten against the XE-series Field Service Manual: ROM corrected to 24 KB (16 KB OS + 8 KB BASIC Rev C), not 16 KB as 10+6; power is +5 V through a 7-pin DIN from a brick containing the transformer, bridge and LM78S05 (5 V +/-5%, 1.5 A), no on-board regulator; SIO carries no supply rail; board assemblies CO70025/CA20097/CA200519 named; launch price sourced to Creative Computing March 1985) | ||||
| 04:08 | Atari 600XL diffhist +1,279 Josh talk contribs (Rewritten against the Atari 600XL Field Service Manual: power input is a 7-pin DIN (C061838) not a barrel jack, PSU CA061982 +5 V +/-2% 1.5 A, no on-board regulator; RAM is two 16K x 4 DRAMs; keyboard is 3/4-stroke 56-key not membrane; no monitor jack; full IC location map added; removed unsourced price, codename and the 400,000-unit production figure) | ||||
| 04:08 | Atari 800 diffhist +5,001 Josh talk contribs (Rewritten against Atari's 400/800 Field Service Manual (June 1982): removed the non-existent HELP key and 'built-in diagnostics' claim, corrected 10 KB OS ROM on a personality card and three RAM card slots (48 KB max), documented 9 V AC input and internal +5 V A/B, +12 V, -5 V rails and the cartridge-lid power interlock, removed unsourced launch price, added real <ref> citations) | ||||
| 04:08 | Atari 400 diffhist +4,733 Josh talk contribs (Rewritten against Atari's 400/800 Field Service Manual (June 1982): corrected power input (9 V AC transformer feeding on-board +5 V A/B, +12 V, -5 V rails, not a DC brick), removed unsourced price/date/model-number, removed non-existent image files, added Memo Pad power-up test and SALT II procedure (these machines have no built-in self test), added real <ref> citations) | ||||
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02:25 | Recommended Tools 2 changes history +7,999 [Josh (2×)] | |||
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02:25 (cur | prev) +183 Josh talk contribs (Add a topical image (page had none)) | ||||
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02:11 (cur | prev) +7,816 Josh talk contribs (Rewrite and verify every named product: corrected Retro Chip Tester (standalone 8Bit-Museum instrument, not a TL866 add-on) with its real capabilities; corrected ESD mat/strap earthing to require a current-limiting resistor per ANSI/ESD S1.1 (a direct bond to mains earth is dangerous); removed insulated gloves as CRT protection in favour of goggles and the correct discharge tooling; replaced the unsourced 20-50 MHz scope rule with edge-speed reasoning; added sourced solder melting points (Kes...) | ||||
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02:15 | Capacitor Failure Symptoms 2 changes history +12,684 [Josh (2×)] | |||
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02:15 (cur | prev) −40 Josh talk contribs (Remove self-referential wording per house rule) | ||||
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02:07 (cur | prev) +12,724 Josh talk contribs (Rewrite with full citations (Nichicon CAT.8101H hosted here, Vishay 40110, KEMET F3011): corrected 60 Hz hum to twice mains frequency, corrected bulging mechanism to Nichicon gas generation, added missing film/X2 suppression section, added tantalum derating 60-50 percent, added Class II ceramic DC-bias behaviour, replaced Japanese-brand rule with no-datasheet-no-purchase, replaced IPA-only cleanup with Nichicon soap-and-water plus never acidic/alkaline, replaced reforming folklore with Nichic...) | ||||
| 01:36 | Battery Explosion, Capacitor or Corrosion Damage diffhist +12,961 Josh talk contribs (Verification drive: corrected chemistry (Li-SOCl2 half-AA neutralised with bicarbonate not IPA/water; capacitor electrolyte washed not neutralised - no published pH); added cadmium hazard for NiCd; added damaged-cell handling section incl. accurate lithium fire guidance; fixed +5V range 4.75-5.25 V; corrected United Chemi-Con/Nippon Chemi-Con and OS-CON/Panasonic; removed arbitrary '100 ohm' rail threshold and Kapton '400C' claim; added IEC 60086-1 cell designations; all figures now <ref>-cit...) | ||||
22 September 2026
| 22:29 | File:Atari 400 800 Field Service Manual June 82.pdf diffhist +1,844 Josh talk contribs (Describe the document, its contents and its licence status; categorise) | ||||
| 22:21 | Atari 800 General Maintenance diffhist +4,738 Josh talk contribs (Rebuild from Atari 400/800 Field Service Manual (hosted): C98-C103 'filter caps' do not exist; '+12V at 4050 pin 1' and '-5V at 4050 pin 8' are wrong (4050 runs on +5V, pin 8 is ground); the 400/800 have no OPTION-key self test. Added Atari's Section 6 symptom checklist, interlock switch S201, module-bay cooling change, Rev A/B ROM warning; cited throughout) | ||||
| 22:19 | Atari 400 Capacitor Replacement Guide diffhist +3,632 Josh talk contribs (Rebuild from Atari 400/800 Field Service Manual (hosted): every designator in the old tables was impossible (400 uses C1xx-C5xx blocks by board). Real list is 8 electrolytics - C192 on the motherboard and C201/202/204/205/207/209/210 on the PSU board. Added real rails (+5A/+5B/+12/-5), real regulators A201/A202, clock check points; cited throughout) | ||||
21 September 2026
| 21:50 | Battery Explosion, Capacitor or Corrosion Damage diffhist +20 Josh talk contribs (Verification drive: flag unverified component data pending check against a primary source) | ||||
| 21:50 | Atari 800 General Maintenance diffhist +20 Josh talk contribs (Verification drive: flag unverified component data pending check against a primary source) | ||||
| 21:50 | Atari 400 Capacitor Replacement Guide diffhist +20 Josh talk contribs (Verification drive: flag unverified component data pending check against a primary source) | ||||