RTG graphics card

• Cirrus Logic GD5426 or GD5428
  • 85 MHz in 8 bit modes
  • 45 MHz in 16 bit
  • 28 MHz in 24 bit
• 1 or 2 MB 45 or 60 ns DRAM
  • 1 MB (eight DIPs) soldered to board
  • eight DIP sockets for additional 1 MB
  • accepts 256k×4 DIPs, 45-80 ns

screen modes

• 1600×1280×8 interlace
• 1152×864×16 interlace
• 800×600×24 non-interlace

optional video encoder module – Pablo

• FBAS and S-VHS outputs
• only PAL compatible
• 15 kHz overload protection
• requires a time base corrector if used with a genlock

notes

• maps its memory directly into the Zorro II address space – speeds up manipulation of graphics memory but limits the amount of fast RAM to 6 MB
• with 8 MB Zorro II fast RAM the board has to be run in segmented mode – lower performance
• two 15 pin VGA connectors
• automatic passthrough
• Picasso96, CyberGraphX 2, 3 & 4, EGS and PicassoRTG drivers
• supported by Linux, NetBSD and OpenBSD

manual
drivers & installation