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ATC-1425A (SiS 85C496/85C497 chipset) - MAME machine

45997
atc1425a
ATC-1425A (SiS 85C496/85C497 chipset)
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GAME SYSTEM CHD BIOS DEVICE PARENT CLONE MECHANICAL SCREENLESS

Main data
Romset and name:
atc1425a ATC-1425A (SiS 85C496/85C497 chipset)
Short name:
ATC-1425A
Manufacturer:
A-Trend
Year:
1995
Genre:
Computer
Category:
Computer / Business - Terminal
Serie:
-
Driver source:
pc/pcipc_sis.cpp
Language:
Similar games:
Input / Controls
Players:
Only one supported
Input:
Mouse, Keyboard
Buttons / keys:
108
Coins:
0
Cabinet:
-
Free-play:
Not supported

Rankings
Average user rating:
AntoPISA BestGame:
-
MASH All-Time:
-
Video
Display:
640x480@60.054866 Hz, CRT 31kHz
Orientation:
Horizontal
Scrolling:
Unknown
Colors:
-
CPU:
AM9517A, Intel 8042AH, Intel 8051, Intel I486DX4
Audio
Sound:
Mono
Audio chips:
CD/DA, Filtered DAC, Speaker
Romset
First release:
Mame 0.218 released on feb-02 2020
Last release:
Mame 0.289 released on jul-31 2026
Clone of:
-
Bios:
Not required
Use rom of:
-
Use sample of:
-
Previous romset:
None
New romset:
None
Files
Dump:
GOOD
Required files:
Romset:
Status
OVERALL:
PRELIMINARY
Emulation:
Preliminary
Graphic:
Imperfect
Color:
Good
Sound:
Good
Cocktail:
Good
Protection:
Good
Save state:
Not supported
Additional info
  • History
  • Info
  • Score
  • PCB
  • Commands
  • Init
  • Driver
  • XML
  • Motherboard:

    ATC-1425A © 199? A-Trend

    The 1425A is a classic "Early PCI" motherboard. It was one of the first mass-produced boards to attempt the leap from the established VLB standard to the then-nascent PCI bus. It is a more rudimentary board than the "B" variant, often featuring less mature BIOS code and less flexible voltage regulation, which made it a challenge for the early 486DX4 and 5x86 upgrades.

    TECHNICAL
    Chipset: SiS 496 (North) / SiS 497 (South).

    CPU Support: Socket 3 (primarily 5V support, with limited 3.3V compatibility via jumpers).

    Expansion: 3 PCI slots and 4 ISA slots.

    Memory: 72-pin SIMM sockets (though early revisions often had strict memory-matching requirements, meaning you had to fill banks in pairs with identical SIMMs).

    Form Factor: Baby AT.

    TRIVIA
    The Jumpers: The "A" revision is notorious for its "jumper spaghetti." To configure the bus speed and CPU voltage, you are looking at a dense cluster of jumpers located right behind the keyboard connector. It is a classic "read the manual or destroy your CPU" board.

    VLB vs. PCI Confusion: When the ATC-1425A first hit the market, many users still wanted to use their old VLB graphics cards. While some SiS 496 boards included VLB slots, the 1425A focused entirely on PCI. This caused quite a stir in 1994, as many enthusiasts were forced to buy brand-new PCI graphics cards (like the early S3 Trio) just to get the system to boot.

    CONTRIBUTE
    Edit this entry: https://www.arcade-history.com/game/293674/?o=2
    Information provided by © Alexis Bousiges
    Information provided by Contribute to the translation
  • Information provided by
    Information provided by / © Copyright of Fujix
  • Information provided by
  • Information provided by
  • Information provided by Fabricio Coroquer, revisited from the work of
    NOTICE: The short version was discontinued in November 2019
  • Information provided by Contribute
  • Information provided by
  • Information provided by
Cheats:
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If you notice any inaccuracy or error, please report

Data updated on july 31 2026


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Romset:
atc1425a
Title:
ATC-1425A
Text:
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ATC-1425A (SiS 85C496/85C497 chipset)
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