Как определить поддерживает ли карта VGA? Можно это сделать по графическому процессору?
Видеокарта старая. Разъем EGA.
Вот текст из datasheet'а на графический процессор (NEC D7220AD):
Microprocessor interface
- DMA transfers with 8257- or 8237-type controllers
- FIFO command buffering
Display memory interface
- Up to 256k words of 16-bits
- Read-modify-write (RMW) display memory cycles as fast as 500 ns
- Dynamic RAM refresh cycles for nonaccessed memory
Light pen input
Drawling hold input
External video sychronization mode
Graphic mode
- Four megabit, bit-mapped display memory
Character mode
- 8K character code and attributes display memory
Mixed graphics and character mode
- 64K if all characters
- 1 megapixel if all graphics
Graphics capabilities
- Figure drawing of lines, arc/circles, rectangles, and graphics characters in 500 ns per pixel
- Display 1024-by-1024 pixels with 4 planes of color or grayscale
- Two independently scrollable areas
Character capabilities
- Auto cursor advanced
- Four independently scrollable areas
- Programmable cursor height
- Characters per row: up to 256
- Character row per screen: up to 100
Video display format
- Zoom magnification factors of 1 to 16
- Panning
- Command-settable video raster parametrs
NMOS technology
Single +5 V power supply
DMA capability
- Bytes o word transfers
- 4 clock periods per byte transferred
On-chip pill-up resistor for VSYNC/EXT, HSYNC and DACK and a pull-down resistor for LPEN/DH
