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Modes we can do:
DRAM-only system: Peak bandwidth used (x 1E6 bytes/sec)
Total bandwidth available
= 46.5E6 bytes/sec
640 x 480 (72Hz) at 8bpp 31.5
800 x 600 (56Hz) at 8bpp 36
800 x 600 (60Hz) at 8bpp 40
800 x 600 (72Hz) at 4bpp 25
1024 x 768 (60Hz) at 4bpp 32.5
1024 x 768 (70Hz) at 4bpp 37.5
1M VRAM system:
Total bandwidth available
= 80E6 bytes/sec
640 x 480 (72Hz) at 16bpp 63
800 x 600 (56Hz) at 16bpp 72
800 x 600 (60Hz) at 16bpp 80
800 x 600 (72Hz) at 8bpp 50
1024 x 768 (60Hz) at 8bpp 65
1024 x 768 (70Hz) at 8bpp 75
2M VRAM system:
Total bandwidth available
= 160E6 bytes/sec
640 x 480 (72Hz) at 32bpp 126
800 x 600 (56Hz) at 32bpp 144
800 x 600 (60Hz) at 32bpp 160
800 x 600 (72Hz) at 16bpp 100
1024 x 768 (60Hz) at 16bpp 130
1024 x 768 (70Hz) at 16bpp 150