Great Tek Corp. GTK-EGA-2833
Logs
typeType
Video
interfaceInterface
signalSignaling
8-bit ISA
dimSlot height
1
datePCI ID
Empty
fccFCC ID
HRGEGA2833
ramRAM size
256KB
chip Chips and specs
-> Video
Gemini VC-001
MTL
Category Video
Memory Type DRAM
Data Bus Type 8-bit ISA
Video Processor VC-001
Video Types Supported EGA/Monochrome
Maximum Onboard Memory 256KB
Highest Resolution Supported 800 x 600
portintI/O ports
2x 
  • RCA Jack
1x 
  • DE-9
1x 
  • 2x13 2.54mm pin header
powerPower connectors
Empty
notes Notes
  • Installing jumper headers on the P3 jumper block and cutting some traces on the back side (P3/C pins 2-3 and P3/D pins 2-3 are hardwired, see attached photo) appears to make this board conformant to the Octek MicroEGA P3 jumper block settings.
  • P5 jumper selects the EPROM type: short 1-2 for a 27128 chip, short 2-3 for a 27256 chip. The actual BIOS code is just 16K, so those are attached as "trimmed" v2.3 and v2.4 16K BIOSes to burn on a 27128 chip.
  • To see Hercules Graphics you need a TTL monochrome monitor - so no full emulation of graphics modes
  • Does not support CGA
  • Jumpers as in the picture works as EGA. Switches: off,on,on,off,on,on,off,off
Last updated 2025-06-18T17:30:38Z
biosc No BIOS files available
drv No drivers available
doc No card documents available
Chip
Release date
File
Logs
Chip
Release date
1987-11
File
Logs
image1 Image 1 of 2 (Ernesto Uriburu)
image2 Image 2 of 2 (Ernesto Uriburu)

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