Half Size ISA

486/5x86 Half-Sized ISA Bus CPU Card with VGA
Single +5V Support




AT-4200 supports 80486SX/DX/DX2/DX4, and 5x86 CPUs. Up to 64MB of RAM memory are supported by the two 72-pin SIMM sockets on board.

As an all-in-one CPU card, AT-4200 integrates the Cirrus GD54M30 PCI bus VGA controller that comes with 1MB embedded VGA memory and CRT support up to 1024 x 768 256 colors. A 32-pin DIP socket supporting 2MB~24MB of DiskOnChip flash disks is also on the card. And One PC-104 expansion slot is provided for add-on card.



  • Half-size, ISA Bus standard
  • Support Intel / AMD / Cyrix / SGS / IBM... 486DX /5x86 CPU up to 133MHz
  • Two 72-pin SIMM sockets supporting up to 64MB EDO/FP RAM
  • Cirrus GD54M30 PCI bus VGA on board with 1MB VGA RAM
  • Award EPROM BIOS



Processor Socket Socket 237
Processor Speeds Intel / AMD / Cyrix / SGS / IBM... 486DX /5x86 CPU up to 133MHz
Chipset ALi M1487/M1489
Bus Speed 66MHz
Bus Interface ISA
Cache Size 128KB (AT-4200 only)
Memory Two 72-pin SIMM sockets, Max. 64MB EDO/FP RAM
Onboard IDE Supports two IDE hard disk drives
Onboard Multi I/O UMC UM8669F, all I/O setup by BIOS, 2 x RS-232 ports with ESD protection and 1
x parallel port (support SPP/EPP/ECP mode)
Onboard VGA Cirrus GD54M30 VGA controller that comes with 1MB embedded VGA RAM and CRT support resolution up to 1024 x768 256 colors, 32-bit BitBLT engine to supply
high performance
USB Support two USB ports
Keyboard PS/2 6-pin Mini Din or 5-pin header
Mouse PS/2 Designed to release one RS-232 port
Onboard SSD DIP socket supports 2MB~144MB DiskOnChip Flash Disks
Watchdog Timer Set by 1, 2, 10, 20, 110, or 220 seconds period. RESET or NMI was generated
when CPU did not periodically trigger the timer
ATX Power ATX power control
Extra Power External +5V 2-pin header for AT-4200 and 8-pin male connector for AT-4201
Power Voltage +5V (4.75~5.25V), +12V, -12V
Power Consumptione 2A@+5V ( AMD 5x86-133 CPU and 8MB RAM)
Temperature 0C to 60C
Humidity 5% to 95%
Form Factor Half-size form factor
Dimensions 7.3" x 4.8" (185mm x 122mm)
AT-4200 486/5x86 Half Size ISA CPU Card with 1MB VGA and 128KB Cache
AT-4201 486/5x86 Half Size ISA CPU Card




Embedded Boards - Riser Cards, Chassis, Power Supplies, EBX Embedded Boards, PC104
Half size, 386, 486, 586, Pentium, Full size, PII, PIII, Celleron, Coppermine and Embedded.
PICMG, PISA, and ISA backplanes from 2 slot to 20 slot, segmented and non segmented.
Rackmount Chassis 19"- 1U, 2U, 3U, 4U, 6U and 7U, Wallmount, 4, 6, 8 slot Half and full sized
Peripherals, Power supplies, Monitor Enclosures, Rack Mount Keyboards
Panel PC Embedded Computers


All Industrial Systems Inc.
672 Still Meadows Circle East
Palm Harbor, Florida 34683
Phone # 727-786-1009