ntvdm - CGA Benchmark Tests

While searching on the internet, I came across a freeware DOS utility that actually tests the CGA capabilities of a DOS system (real or emulated). The address of the program is listed here: http://www.oldskool.org/pc/cgacomp

NOTE: A skipped test does not immediately mean that the test failed. It means that the test couldn't show a feature for one reason or another.

• Monitor Calibration
  • - Brightness [PASSED]
  • - Contrast [PASSED]
  • - Color [PASSED]
  • - Monochrome [PASSED]
  • - Moire (int) [PASSED]
  • - Moire (color) [PASSED]
  • - Uniformity and Convergence [FAIL]
  • - Linearity (RGB) [PASSED]
  • - Linearity (Composite) [FAIL]
• Video RAM Speed Benchmark
  • Block Memory Read [FAIL]
  • Block Memory Write [FAIL]*
  • Interleaved Opcode/Memory Read [FAIL]
  • Interleaved Opcode/Memory Write [FAIL]
• Color Select Register
  • Border/Overscan color select [SKIPPED]
  • Medium-res graphics background select [FAIL]#
  • High-res graphics foreground select [FAIL]#
  • Medium-res graphics palettes [FAIL]#
• Textmode Manipulation
  • 40-column display [PASSED]
  • Textmode highcolor backgrounds [FAIL]
  • Textmode cursor control [FAIL]
  • CGA "Snow" visibility [SKIPPED]
  • 8x8 Font display [PASSED]*
• M6845 Compatibility
  • Vertical retrace detect [PASSED]
  • Horizontal retrace detect [FAIL]#
  • Textmode row reprogramming [FAIL]
  • Textmode row/column reprogramming [PASSED]
  • Interlaced video mode [PASSED]*
  • Display Positioning [CRASH]
  • Start address reprogramming [FAIL]#
• Composite Monitor Tests
  • CGA card determination [FAIL]
  • Composite: Low-res text [PASSED]
  • Composite: Low-res graph [FAIL]
  • Aspect Ratio [PASSED]
• Capture Calibration Plates
  • RGB Color Bars [FAIL]
  • Composite Color Bars [FAIL]
  • Motion test plate [PASSED]
  • RGBI Calibration bars [FAIL]
  • Audio/Video sync drift [PASSED]
• Visual Glitches occur

1. Crashes on Windows 7