Upon power up, the first VGA on card 0 is selected as default. A rotary
switch is used to select card and VGA channel order.
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The Mitsi Super Multi-Graphics Card is a
full-featured Super-VGA card with the ability to drive both television sets or
VGA monitors. With the ability to add unlimited numbers of Super-VGA outputs to
any ISA bus PC, the system is ideal for industrial, financial, software
development, airlines, trade shows, cable television broadcasters or any
business that needs multiple channels of high resolution graphics.
In addition to driving standard and Super VGA monitors, the card is available
in a USA RS-170 525-line composite video version, or as a British 625-line
PAL-I, Continental Europe PAL-G or French SECAM version. A VGA to composite
video adapter plug is included for connection to Type-F 75 ohm composite video
cables.
Each card contains two independent 8 or 16-bit bus autoswitch Super-VGA
circuits. Each circuit shares a logic circuit and I/O port that allows any
Super-VGA output to be selected and placed in the PC memory map. The I/O
registers and memory locations of the Super-VGA controller are switched
simultaneously on all boards in the system with a single I/O write cycle.
Up to 16 cards may be addressed at the same I/O port, allowing
all 32 available channels to be controlled by a single I/O instruction.
Additional cards may be used by using another I/O port. |
