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- OAK Technologies OTI-067 and 037C.
-
- OTI037C has 256K or 512K.
- OTI-067 has 256K or 512K.
- OTI-077 allows 1MB and up to 1024x768 in 256 colors.
-
-
- 3DEh index 9h (R/W):
-
- 3DEh index 0Ah (R/W):
-
- 3DEh index 0Bh (R/W):
- bit 5-7 (077) Chip revision. 5=OTI-077.
-
- 3DEh index Dh (R/W):
- bit 6 1MB if set
- 7 512K if set, 256 else.
-
- 3DEh index 11h (R/W):
- bit 0-3 Read Bank no
- 4-7 Write Bank no
- Note: Some sources gives this register as 3DFh with no index.
- Note: This register apparently write only in Oak-037C.
-
-
- Bank Switching:
-
- Two banks exist in reg 3DEh index 11h.
-
-
- ID Oak VGA:
-
- if testinx2($3DE,$D,$38) then
- begin
- _OAK_37C !!
- if testinx($3DE,$11) then
- if rdinx($3DE,$B)=5 then _OAK_077 {Haven't tested the -077}
- else _OAK_067;
- end;
-
-
- Modes:
-
- (OTI 067/077)
-
- 4Eh T 80 60 16 (8x8) Not all 067's
- 4Fh T 132 60 16 (8x8)
- 50h T 132 25 16 (8x14)
- 51h T 132 43 16 (8x8)
- 52h G 800 600 16 planar
- 53h G 640 480 256 packed
- 54h G 800 600 256 packed
- 55h G 1024 768 4 ??
- 56h G 1024 768 16 planar
- 57h G 768 1024 4 ??
- 58h G 1280 1024 16 planar
- 59h G 1024 768 256 planar OTI-077 only
- 5Ah G 512 512 32k Sierra 15-bit OTI-077 w/Sierra
- 5Bh G 640 400 32k Sierra 15-bit OTI-077 w/Sierra
- 5Ch G 640 480 32k Sierra 15-bit OTI-077 w/Sierra
-
- (OTI037C "UNIQUE" VGA)
-
- 50h T 132 25 16 (8x14)
- 51h T 132 43 16 (8x8)
- 52h G 800 600 16 planar
-
-
- (OTI037C with NEL Electronics BIOS)
-
- 50h G 640 480 16 planar
- 51h T 80 30 (16x9)
- 52h G 1024 480 16 planar
- 53h T 80 25 (16x8)
- 54h T 132 43 (8x8)
- 55h T 132 25 (14x8)
- 56h T 132 43 (8x9)
- 57h T 132 25 (14x9)
- 58h T 80 43 (8x8)
- 59h T 80 43 (8x9)
- 5Ah T 80 60 (8x8)
- 5Bh G 800 600 16
- 5Ch T 100 37 (16x8)
- 5Dh T 100 75 (8x8)
- 5Eh G 800 600 16
- 6Ah G 800 600 16
- 6Bh T 100 37 (16x8)
-