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Atari 1040STE

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Atari 1040STE
File:Atari-1040STE.jpg
Specifications
ManufacturerAtari Corporation
TypeHome computer
ReleasedSeptember 1, 1989 (Europe); June 2, 1990 (U.S.)[1] ([atarimuseum.info](https://www.atarimuseum.info/1040ste.htm?utm_source=chatgpt.com))
Discontinued1994[2] ([atarimuseum.info](https://www.atarimuseum.info/1040ste.htm?utm_source=chatgpt.com))
Intro priceLaunch examples: DM 1,598 (West Germany, Sept. 1989); US$699 with color monitor (June 1990); typical U.S. street price fell to US$599 by Feb. 1991.[3] ([atarimuseum.info](https://www.atarimuseum.info/1040ste.htm?utm_source=chatgpt.com))
CPUMotorola MC68000 (PLCC) @ 8 MHz[4] ([manualslib.com](https://www.manualslib.com/manual/2170364/Atari-520ste.html?utm_source=chatgpt.com))
Memory1 MB standard; 30‑pin SIMMs, expandable to 4 MB (256 KB or 1 MB modules only; early units used SIPP).[5] ([info-coach.fr](https://info-coach.fr/atari/hardware/memory.php?utm_source=chatgpt.com))
StorageInternal 3.5" DS/DD 720 KB floppy; external floppy port; ACSI (DMA) external hard‑disk interface.[6] ([atarimagazines.com](https://www.atarimagazines.com/startv5n4/enhanced.html?utm_source=chatgpt.com)) [en.wikipedia.org](https://en.wikipedia.org/wiki/Atari_ST?utm_source=chatgpt.com))
Display320×200 (16 colors), 640×200 (4 colors), 640×400 mono; 4,096‑color palette; hardware fine scroll and split screen.[7] ([en.wikipedia.org](https://en.wikipedia.org/wiki/Atari_ST?utm_source=chatgpt.com))
SoundYamaha YM2149 PSG (3 ch + noise) + 2‑channel 8‑bit stereo DMA PCM at 6.25/12.5/25/50 kHz; LMC1992 audio control via Microwire; stereo RCA line out.[8] ([bus-error.nokturnal.pl](https://bus-error.nokturnal.pl/atari_compendium/html/chap5.htm?utm_source=chatgpt.com)) [alive.atari.org](https://alive.atari.org/alive11/mcrowire.php?utm_source=chatgpt.com))
Dimensions475 mm × 290 mm × 70 mm (W×D×H), case same footprint as late 1040STF/M.[9] ([forums.atariage.com](https://forums.atariage.com/topic/134542-atari-520-ste-dimensions/?utm_source=chatgpt.com))
Weight≈4.0–4.7 kg (varies by PSU/drive revision).[10] ([computermuseum.wordpress.com](https://computermuseum.wordpress.com/2006/04/25/1040-stf/?utm_source=chatgpt.com)) [amibay.com](https://www.amibay.com/threads/atari-1040ste-4mb-ram-tos-1-62-german.2442186/?utm_source=chatgpt.com))
OS / FirmwareTOS 1.06 (“STE TOS”) or TOS 1.62 in 256 KB (2×128 KB) ROMs; GEM desktop.[11] ([en.wikipedia.org](https://en.wikipedia.org/wiki/Atari_TOS?utm_source=chatgpt.com))
PredecessorAtari 1040STFM
SuccessorAtari Mega STE

The Atari 1040STE (ST Enhanced) is the late‑generation 68000‑based ST model with upgraded graphics, audio, memory subsystem, and I/O versus the earlier STf/STfm machines. It kept the integrated keyboard/CPU form factor and 8 MHz MC68000 while adding a 4,096‑color palette, 2‑channel DMA stereo audio with on‑board filtering and mixing, SIMM‑based RAM to 4 MB, and two side‑mounted 15‑pin enhanced joystick/analogue ports. It shipped broadly in Europe in late 1989 and reached U.S. retail on June 2, 1990. [12] ([en.wikipedia.org](https://en.wikipedia.org/wiki/Atari_ST?utm_source=chatgpt.com)) [atarimuseum.info](https://www.atarimuseum.info/1040ste.htm?utm_source=chatgpt.com))

Architecture and Processor

The 1040STE uses a socketed Motorola MC68000 (PLCC) clocked at 8 MHz on a 16‑bit external bus (32‑bit internal ALU/regs). Support logic is consolidated into Atari‑designed ASICs: the GST MCU (combines GLUE, MMU, joystick/paddle logic, DMA‑audio addressing, clocking) and the GST Shifter (enhanced video and audio shifting). Early STE boards feature a discrete BLiTTER; later revisions integrate the blitter into the GST MCU. [13] ([info-coach.fr](https://info-coach.fr/atari/hardware/STE-HW.php?utm_source=chatgpt.com)) [forums.atariage.com](https://forums.atariage.com/topic/263950-missing-blitter-from-ste/?utm_source=chatgpt.com))

Key chips commonly encountered on 1040STE boards: - Motorola MC68000FN8 CPU (PLCC, 8 MHz).[14] ([manualslib.com](https://www.manualslib.com/manual/2170364/Atari-520ste.html?utm_source=chatgpt.com)) - Atari GST MCU: C300589 (earlier, separate BLiTTER) or C302183 (integrated BLiTTER) 144‑pin QFP.[15] ([forums.atariage.com](https://forums.atariage.com/topic/263950-missing-blitter-from-ste/?utm_source=chatgpt.com)) [ebay.com](https://www.ebay.com/itm/163699098588?utm_source=chatgpt.com)) - Atari GST Shifter: C301712‑001 (later SMD) or C300588‑001 (earlier 84‑pin), provides 4096‑color palette and video shift; also interfaces Microwire for LMC1992 audio.[16] ([ataristsales.co.uk](https://www.ataristsales.co.uk/product/gst-shifter-chip-c301712-001-for-the-atari-ste-and-mega-ste/?utm_source=chatgpt.com)) [atari-forum.com](https://www.atari-forum.com/viewtopic.php?t=29116&utm_source=chatgpt.com)) - Motorola 68901 MFP (interrupt/timer/serial glue), WD1772 floppy controller, DMA controller (several revisions), Yamaha YM2149 PSG, National LMC1992 audio controller (Microwire).[17] ([info-coach.fr](https://info-coach.fr/atari/hardware/STE-HW.php?utm_source=chatgpt.com)) [atariarchives.org](https://www.atariarchives.org/cfn/12/05/03/0003.php?utm_source=chatgpt.com))

Input/Output and Expansion

Rear and side panel connectivity (varies slightly by region/revision): - RS‑232C serial (DB‑25M), Centronics parallel (DB‑25F).[18] ([en.wikipedia.org](https://en.wikipedia.org/wiki/Atari_ST?utm_source=chatgpt.com)) - ACSI DMA port (DB‑19) for hard disks/laser printer; external floppy (14‑pin DIN).[19] ([en.wikipedia.org](https://en.wikipedia.org/wiki/Atari_ST?utm_source=chatgpt.com)) - Monitor out (13‑pin DIN) for RGB mono/color; some units retain TV/RF output in certain regions. [20] ([atarimagazines.com](https://www.atarimagazines.com/startv5n4/enhanced.html?utm_source=chatgpt.com)) - MIDI In/Out (5‑pin DIN).[21] ([en.wikipedia.org](https://en.wikipedia.org/wiki/Atari_ST?utm_source=chatgpt.com)) - Two enhanced joystick/analogue ports (DB‑15F) on the left side; accept Jaguar‑style pads/analogue controllers; adapters allow two standard DE‑9 sticks per port. [22] ([info-coach.fr](https://info-coach.fr/atari/hardware/interfaces.php?utm_source=chatgpt.com)) - Two DE‑9 mouse/joystick ports retained under the keyboard recess. [23] ([pcworld.com](https://www.pcworld.com/article/511497/inside_atari_1040st.html?utm_source=chatgpt.com)) - Stereo RCA (L/R) line‑level audio outputs. [24] ([atarimagazines.com](https://www.atarimagazines.com/startv5n4/enhanced.html?utm_source=chatgpt.com))

The internal PSU is a compact switching supply providing +5 V and +12 V; nominal +5 V adjustment is 5.1 V. [25] ([manualslib.com](https://www.manualslib.com/manual/2170364/Atari-520ste.html?utm_source=chatgpt.com))

Display and Graphics

- Resolutions: 320×200 (16 colors), 640×200 (4 colors), 640×400 mono (SM124‑class monitor required).[26] ([en.wikipedia.org](https://en.wikipedia.org/wiki/Atari_ST?utm_source=chatgpt.com)) - Palette: 12‑bit (4,096 colors), with per‑scanline palette tricks enabling richer on‑screen color in demos/games.[27] ([en.wikipedia.org](https://en.wikipedia.org/wiki/Atari_ST?utm_source=chatgpt.com)) - Hardware features: BLiTTER (standard on STE; max ~4 MB/s moves), fine hardware scroll, split screen (via Shifter timing).[28] ([en.wikipedia.org](https://en.wikipedia.org/wiki/Atari_ST?utm_source=chatgpt.com)) - Shifter devices: early C300588‑001 (84‑pin) and later C301712‑001 (SMD) found across board revisions. [29] ([atari-forum.com](https://www.atari-forum.com/viewtopic.php?t=29116&utm_source=chatgpt.com))

PCB Schematics & Service Manual

Motherboard families and documentation useful to technicians:

- Common 1040STE board FABs/ASSYs 

 - CA4003290 (early–mid runs; some with SIPP RAM, later SIMM), CA401177 (late, many SMD parts), and C300779‑001 Rev. 5.1 are observed in the field. [30] ([temlib.org](https://temlib.org/AtariForumWiki/index.php/Atari_ST_motherboard_revisions?utm_source=chatgpt.com)) [milan.kovac.cc](https://milan.kovac.cc/atari/chipmunk/?id=1499348247&utm_source=chatgpt.com))

- Schematic set: “Atari STe Schematic Rev. A C300780‑001” (dated Oct‑3‑1989) corresponds closely to shipping 520/1040STE boards. [31] ([yumpu.com](https://www.yumpu.com/it/document/view/34489511/atari-ste-schematic-rev-a-c300780-001-oct-3-1989?utm_source=chatgpt.com)) [elektrotanya.com](https://elektrotanya.com/atari_1040ste_c300780-001_rev.a_sch_1986.pdf/download.html?utm_source=chatgpt.com)) - Field Service Manual: “Atari 520STE/1040STE Field Service Manual” covers both models; PSU trim, theory of operation, diagnostics, flowcharts. [32] ([manualslib.com](https://www.manualslib.com/manual/2170364/Atari-520ste.html?utm_source=chatgpt.com))

Board/FAB (marking) Typical features Matching schematic docs
CA4003290 Early “beta” and revised runs; some SIPP sockets; discrete BLiTTER; later sub‑runs add integrated‑BLiTTER MCU C300780‑001 Rev.A STe schematic set
C300779‑001 Rev. 5.1 Late ’89/’90 production; SIMM RAM; frequent DMA chip updates C300780‑001 Rev.A; field addenda
CA401177 Late SMD‑heavy run; BLiTTER in MCU; surface‑mount 68000, Shifter C300780‑001 Rev.A + rev notes

Memory and Storage

- DRAM: Four 30‑pin SIMM sockets (some early units shipped SIPP). Accept 256 KB or 1 MB 8‑bit modules (with/without parity). Supported capacities: 1, 2, or 4 MB; 2.5 MB is possible but has compatibility caveats. Recommended speeds: 150 ns (256 KB) and 120 ns (1 MB). [33] ([info-coach.fr](https://info-coach.fr/atari/hardware/memory.php?utm_source=chatgpt.com)) - ROM: Two socketed 128 KB ROMs (27C010 class) carrying TOS 1.06 or 1.62; upgrades and multi‑TOS switchers are common. [34] ([en.wikipedia.org](https://en.wikipedia.org/wiki/Atari_TOS?utm_source=chatgpt.com)) [ultradevtools.de](https://www.ultradevtools.de/ultraTos.html?utm_source=chatgpt.com)) - Floppy: Internal 3.5" DS/DD 720 KB; external 14‑pin DIN port allows second drive; HD (1.44 MB) available only via later mods/kits. [35] ([en.wikipedia.org](https://en.wikipedia.org/wiki/Atari_ST?utm_source=chatgpt.com)) - Mass storage: ACSI (DB‑19) hard disks; modern SD‑based ACSI devices (e.g., UltraSatan) rely on healthy DMA silicon (see DMA notes below). [36] ([forums.atariage.com](https://forums.atariage.com/topic/211660-buggy-dma-chip/?utm_source=chatgpt.com))

- Atari 1040STE General Maintenance - Atari 1040STE Troubleshooting Guide - Atari 1040STE Capacitor Replacement Guide - Atari ST and STE RAM Upgrade Guide - Atari STE DMA Port & Hard‑Disk Guide

Sound Capabilities

In addition to the YM2149 PSG (3 tones + noise), the STE adds 2‑channel 8‑bit PCM playback via DMA, at selectable nominal rates of 6,258/12,517/25,033/50,066 Hz (mono or stereo). Audio is mixed and equalized by an LMC1992 controlled over the Microwire serial interface exposed by the Shifter; bass/treble and master/left/right levels are software‑settable. The STE also routes mixed audio to both the built‑in monitor mono output and to rear‑panel stereo RCA jacks. [37] ([bus-error.nokturnal.pl](https://bus-error.nokturnal.pl/atari_compendium/html/chap5.htm?utm_source=chatgpt.com)) [alive.atari.org](https://alive.atari.org/alive11/mcrowire.php?utm_source=chatgpt.com)) [mikrosk.github.io](https://mikrosk.github.io/doitarchive/doit_st/0309.htm?utm_source=chatgpt.com))

Tech note: Many units ship with PSG/DMA level imbalance (PSG “hotter”). Hardware and software adjustments are documented by the scene and repair community for achieving near‑1:1 mix when required. [38] ([atari.8bitchip.info](https://atari.8bitchip.info/STEamFix.html?utm_source=chatgpt.com)) [alive.atari.org](https://alive.atari.org/alive11/mcrowire.php?utm_source=chatgpt.com))

General Maintenance

- PSU: Recap original switchers (DVE/Mitsumi etc.) and set +5 V at ≈5.10 V under load; replace the 2 A fuse only after root‑cause analysis. [39] ([manualslib.com](https://www.manualslib.com/manual/2170364/Atari-520ste.html?utm_source=chatgpt.com)) - Mainboard electrolytics: Replace aging caps on CA4003290/CA401177 boards; vetted lists exist for STE cap kits. [40] ([wiki.console5.com](https://wiki.console5.com/wiki/Atari_ST?utm_source=chatgpt.com)) [console5.com](https://console5.com/store/atari-520ste-1040ste-computer-cap-kit-main-ste-pcb.html?utm_source=chatgpt.com)) - Floppy: Clean/lubricate rails; verify write‑protect and track‑0 sensors; re‑align only with proper disks/tools. - RAM: Use matched SIMM pairs; avoid 2 MB/4 MB 30‑pin modules which are not supported by the stock MMU design. [41] ([info-coach.fr](https://info-coach.fr/atari/hardware/memory.php?utm_source=chatgpt.com))

For full procedures see Atari 1040STE General Maintenance.

Technical Details

Subsystem Device(s) / notes
CPU Motorola MC68000 (PLCC) @ 8 MHz; socketed on most boards. [42] ([manualslib.com](https://www.manualslib.com/manual/2170364/Atari-520ste.html?utm_source=chatgpt.com))
System ASICs GST MCU (C300589 early, C302183 later with integrated BLiTTER); GST Shifter (C301712‑001/C300588‑001). [43] ([forums.atariage.com](https://forums.atariage.com/topic/263950-missing-blitter-from-ste/?utm_source=chatgpt.com)) [atari-forum.com](https://www.atari-forum.com/viewtopic.php?t=29116&utm_source=chatgpt.com))
Blitter Discrete BLiTTER on early boards; ~4 MB/s block moves; later integrated into MCU. [44] ([en.wikipedia.org](https://en.wikipedia.org/wiki/Atari_ST?utm_source=chatgpt.com))
Memory 4× 30‑pin SIMM sockets (or SIPP on earliest); 1–4 MB official configurations. [45] ([info-coach.fr](https://info-coach.fr/atari/hardware/memory.php?utm_source=chatgpt.com))
Audio YM2149 PSG + 2‑ch DMA PCM (8‑bit) via Shifter; LMC1992 mixer/EQ (Microwire). [46] ([bus-error.nokturnal.pl](https://bus-error.nokturnal.pl/atari_compendium/html/chap5.htm?utm_source=chatgpt.com)) [alive.atari.org](https://alive.atari.org/alive11/mcrowire.php?utm_source=chatgpt.com))
I/O RS‑232 (DB‑25M), Centronics (DB‑25F), ACSI DMA (DB‑19), external floppy (14‑pin DIN), monitor (13‑pin DIN), 2× MIDI, 2× DB‑15 enhanced joystick, 2× DE‑9 mouse/joystick. [47] ([atarimagazines.com](https://www.atarimagazines.com/startv5n4/enhanced.html?utm_source=chatgpt.com)) [info-coach.fr](https://info-coach.fr/atari/hardware/interfaces.php?utm_source=chatgpt.com))
FDD WD1772 controller; 3.5" DS/DD 720 KB internal. [48] ([info-coach.fr](https://info-coach.fr/atari/hardware/STE-HW.php?utm_source=chatgpt.com))

System Architecture at a Glance

- MC68000 8 MHz core; 24‑bit address space (16 MB). - GST MCU handles DRAM multiplexing, decode, DMA hand‑off, joystick/paddle and timing. - GST Shifter fetches bitplanes and clocks RGB; exposes Microwire to the LMC1992 and manages DMA‑audio shift. - BLiTTER accelerates block copies/fills. - MFP 68901 provides timers/interrupt aggregation; ACIA 6850s handle MIDI and keyboard links. - DMA port (ACSI) arbitrates CPU/disk transfers. [49] ([info-coach.fr](https://info-coach.fr/atari/hardware/STE-HW.php?utm_source=chatgpt.com))

Apple Service Manual

This section header is retained for template consistency; Atari 1040STE documentation is covered instead by the official 520/1040STE Field Service Manual and STe schematics listed below. [50] ([manualslib.com](https://www.manualslib.com/manual/2170364/Atari-520ste.html?utm_source=chatgpt.com))

Logic Board & Analog Board Schematics

The 1040STE is a single main logic board plus a separate PSU (no discrete “analog board” as on Apple compacts). Use: - Atari STe Schematic Rev. A (C300780‑001, 1989‑10‑03). [51] ([yumpu.com](https://www.yumpu.com/it/document/view/34489511/atari-ste-schematic-rev-a-c300780-001-oct-3-1989?utm_source=chatgpt.com)) - 520/1040STE Field Service Manual (diagnostics, PSU trim, theory). [52] ([manualslib.com](https://www.manualslib.com/manual/2170364/Atari-520ste.html?utm_source=chatgpt.com))

Troubleshooting

Common STE failure modes and pointers: - No boot/white or checker screen: reseat PLCC CPU and Shifter; verify +5 V = 5.10 V; try known‑good SIMMs in bank order (1/3); run a diagnostic cartridge if available. [53] ([forums.atariage.com](https://forums.atariage.com/topic/283468-1040ste-wont-boot-help-needed/?utm_source=chatgpt.com)) - Floppy errors: clean heads, verify WD1772 clock, check drive select and write‑protect sensors. - ACSI hard‑disk issues: certain early DMA chips (e.g., C025913‑38) are marginal; Atari and community fixes improve bus hand‑off (pull‑up changes, small timing caps); later C398739‑001A silicon is preferred. [54] ([exxosforum.co.uk](https://exxosforum.co.uk/atari/last/DMASG/index.htm?utm_source=chatgpt.com)) [forums.atariage.com](https://forums.atariage.com/topic/211660-buggy-dma-chip/?utm_source=chatgpt.com)) - Audio imbalance/distortion: adjust LMC1992 in software (reduce master volume a few dB) or apply documented Microwire/PSG level fix for proper DMA/PSG mix. [55] ([alive.atari.org](https://alive.atari.org/alive11/mcrowire.php?utm_source=chatgpt.com)) [atari.8bitchip.info](https://atari.8bitchip.info/STEamFix.html?utm_source=chatgpt.com))

🧠 Architecture and Processor

Deep‑dive register highlights for repair and testing: - DMA sound control block at $FF8900–$FF8920: set mode (mono/stereo), rate (6.25–50 kHz), base/end addresses, and looping. [56] ([bus-error.nokturnal.pl](https://bus-error.nokturnal.pl/atari_compendium/html/chap5.htm?utm_source=chatgpt.com)) - LMC1992 Microwire writes via $FF8922/$FF8924; 11‑bit transactions (addr+data). [57] ([mikrosk.github.io](https://mikrosk.github.io/doitarchive/doit_st/0309.htm?utm_source=chatgpt.com)) - BLiTTER present flag and speed: use desktop “Blitter” option or query $FFFF8A00 series (model‑dependent). [58] ([en.wikipedia.org](https://en.wikipedia.org/wiki/Atari_ST?utm_source=chatgpt.com))

Technical Documentation

- Atari 520STE/1040STE Field Service Manual (theory, diagnostics, PSU adjustment). [59] ([manualslib.com](https://www.manualslib.com/manual/2170364/Atari-520ste.html?utm_source=chatgpt.com)) - Atari 1040STE Schematics (C300780‑001 Rev.A) (Oct‑3‑1989). [60] ([yumpu.com](https://www.yumpu.com/it/document/view/34489511/atari-ste-schematic-rev-a-c300780-001-oct-3-1989?utm_source=chatgpt.com)) [archive.org](https://archive.org/details/Atari_1040STe_Schematic_1986_Atari?utm_source=chatgpt.com)) - Atari Compendium – Hardware Reference (DMA sound registers, system programming). [61] ([bus-error.nokturnal.pl](https://bus-error.nokturnal.pl/atari_compendium/html/chap5.htm?utm_source=chatgpt.com)) - STE Hardware Description (Info‑Coach) (chip roles, LMC1992 and GST ASIC details). [62] ([info-coach.fr](https://info-coach.fr/atari/hardware/STE-HW.php?utm_source=chatgpt.com)) - Atari ST Interfaces and Connectors (Info‑Coach) (pinouts for STE DB‑15 joystick and audio). [63] ([info-coach.fr](https://info-coach.fr/atari/hardware/interfaces.php?utm_source=chatgpt.com))

Notes on dimensions and mass

Case dimensions for the 1040‑style chassis are approximately 475×290×70 mm, consistent with user measurements and museum entries for 1040STF/M/STE shells; bare unit weights vary across revisions and drive/PSU vendors (≈4.0–4.7 kg). [64] ([forums.atariage.com](https://forums.atariage.com/topic/134542-atari-520-ste-dimensions/?utm_source=chatgpt.com)) [computermuseum.wordpress.com](https://computermuseum.wordpress.com/2006/04/25/1040-stf/?utm_source=chatgpt.com)) [amibay.com](https://www.amibay.com/threads/atari-1040ste-4mb-ram-tos-1-62-german.2442186/?utm_source=chatgpt.com))

Motherboard revisions (service reference)

Common field sightings include CA4003290 (early/mid), C300779‑001 Rev.5.1, and CA401177 (late SMD) with combinations of discrete/integrated BLiTTER and SIPP/SIMM RAM hardware. [65] ([temlib.org](https://temlib.org/AtariForumWiki/index.php/Atari_ST_motherboard_revisions?utm_source=chatgpt.com)) [milan.kovac.cc](https://milan.kovac.cc/atari/chipmunk/?id=1499348247&utm_source=chatgpt.com))

PCB Schematics & Service Guide

- Assembly/FAB identifiers: CA4003290 (early/mid), C300779‑001 Rev.5.1 (1989‑1990), CA401177 (late). [66] ([wiki.console5.com](https://wiki.console5.com/wiki/Atari_ST?utm_source=chatgpt.com)) - Schematic mapping table is provided above; use C300780‑001 Rev.A set as baseline, plus field addenda as encountered. [67] ([yumpu.com](https://www.yumpu.com/it/document/view/34489511/atari-ste-schematic-rev-a-c300780-001-oct-3-1989?utm_source=chatgpt.com))

Service manual and schematics (quick links)

- Atari 520/1040STE Field Service Manual (PSU 5.1 V calibration, fault trees). [68] ([manualslib.com](https://www.manualslib.com/manual/2170364/Atari-520ste.html?utm_source=chatgpt.com)) [best-electronics-ca.com](https://www.best-electronics-ca.com/service_.htm?utm_source=chatgpt.com)) - 1040STE Schematic (C300780‑001 Rev. A, 1989) (Internet Archive/Yumpu mirrors). [69] ([archive.org](https://archive.org/details/Atari_1040STe_Schematic_1986_Atari?utm_source=chatgpt.com)) [yumpu.com](https://www.yumpu.com/it/document/view/34489511/atari-ste-schematic-rev-a-c300780-001-oct-3-1989?utm_source=chatgpt.com))

References

  1. ↑ Shipping windows compiled from period coverage and museum research.
  2. ↑ End-of-production window reported by the German Atari Museum project.
  3. ↑ Contemporaneous pricing collated from dealer brochures and museum price tables.
  4. ↑ Listed in the 520STE/1040STE Field Service Manual.
  5. ↑ STE memory subsystem notes and SIMM/SIPP specifics.
  6. ↑ Port/drive summary from contemporary reviews and hardware guides.
  7. ↑ STE graphics overview and palette expansion versus STF/M.
  8. ↑ DMA sample rates and LMC1992 mixer details.
  9. ↑ User‑measured case dimensions consistent across ST and STE shells.
  10. ↑ Typical bare‑unit masses reported by collections and sales logistics.
  11. ↑ TOS versions and ROM formats for STE.
  12. ↑ Overview of STE enhancements and U.S. release timing.
  13. ↑ STE motherboard component map and GST MCU/SHIFTER roles.
  14. ↑ CPU type and packaging from the Field Service Manual.
  15. ↑ Part numbers for STE MCUs, with/without blitter.
  16. ↑ GST Shifter device references.
  17. ↑ Part roles summarized from hardware articles and service texts.
  18. ↑ Standard ST family I/O retained on STE.
  19. ↑ ACSI/DMA and external floppy connector formats.
  20. ↑ Monitor/TV outputs on STE models reviewed at launch.
  21. ↑ ST‑series hallmark MIDI ports.
  22. ↑ STE joystick port pinout and usage.
  23. ↑ Legacy ports placement description.
  24. ↑ STE rear‑panel stereo jacks.
  25. ↑ Power section adjustment and fuse rating in Field Service Manual.
  26. ↑ Resolution modes across the ST family.
  27. ↑ Palette expansion vs. earlier STs.
  28. ↑ BLiTTER throughput and fine‑scroll support.
  29. ↑ Device identities and interchangeability notes.
  30. ↑ Community‑maintained revision list and serial registry entries.
  31. ↑ Primary STe schematic drawings.
  32. ↑ Manual availability and scope.
  33. ↑ STE SIMM/SIPP guidance and timing requirements.
  34. ↑ TOS formats and upgrade practice.
  35. ↑ Stock floppy capabilities and external port.
  36. ↑ ACSI usage and DMA chip caveats on some STEs.
  37. ↑ DMA registers/rates and LMC1992 control model.
  38. ↑ Documented Microwire mix corrections and best‑practice settings.
  39. ↑ PSU calibration guidance.
  40. ↑ Consolidated capacitor lists for STE PCB variants.
  41. ↑ Supported SIMM sizes and speeds.
  42. ↑ CPU packaging and speed.
  43. ↑ Part numbers and integration notes.
  44. ↑ BLiTTER presence and throughput.
  45. ↑ Memory sockets and limits.
  46. ↑ DMA and Microwire chain.
  47. ↑ Panel I/O inventory.
  48. ↑ WD1772 use on STE.
  49. ↑ Consolidated STE block‑level description.
  50. ↑ Atari, not Apple, publishes the applicable service literature.
  51. ↑ Primary schematic set for 520/1040STE.
  52. ↑ Field servicing content and procedures.
  53. ↑ Community triage tactics; RAM isolation and reseat advice.
  54. ↑ Known “DMA bug” history and mitigation.
  55. ↑ Microwire programming and hardware correction notes.
  56. ↑ Register map and recommended programming sequence for playback.
  57. ↑ Microwire timing, masks, and command format.
  58. ↑ Presence and configuration checks.
  59. ↑ Manual sources and scanned copies.
  60. ↑ Schematics hosted by preservation sites.
  61. ↑ Compendium hardware chapters.
  62. ↑ STE hardware overview and translations of ST Magazine technical articles.
  63. ↑ Connector pinouts and port usage.
  64. ↑ Dimension and weight observations from museum sources and shipping reports.
  65. ↑ Community rev lists and serial database entries corroborating board IDs.
  66. ↑ See also cap lists keyed to board markings for recapping jobs.
  67. ↑ Multiple hosts mirror the same Rev.A package; verify sheet dates.
  68. ↑ Manualslib mirror; Best Electronics print copies.
  69. ↑ Schematic sets and dates.

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Editorial note on the “infobox” request and section names: The values supplied in the user’s template (e.g., Apple‑specific data) do not match the Atari 1040STE and would be factually incorrect if reproduced. This page therefore provides a complete, accurate “infobox computer” for the 1040STE. Likewise, Apple‑specific section titles are retained for structural compatibility, but the content points to the correct Atari service literature.

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