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Internet Info 1993
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Internet Info CD-ROM (Walnut Creek) (1993).iso
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VGA
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realtek.txt
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1993-07-15
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Realtek RT 3106 - Upto 1 Mbyte.
3CEh index Fh (R/W): Extended Function.
bit 2 Single/Dual bank.
If set 3D6h is the read bank number and 3D7h is the write bank number.
if clear 3D7h is used for both read and write operations.
3d4h index 1Ah:
bit 6-7 Chip version. 0=Version 0, 1= Version 1, 2=Version 2, 3=Version x
3d4h index 1Eh:
bit 0-1 Video Ram. If Chip version =0: 0=256k, 1=512k, 2=768k and 3=1MB
If chip version >0: 0=256k, 1=512k, 2=1MB and 3=2MB.
2
4-7
3D4h index 1Fh (R/W):
bit 0-1 Emulation mode: 0=VGA, 1=EGA, 2=CGA, 3=MDA
2-5
3D6h (R/W): Bank register
bit 0-3 64k Bank register (Read bank if 3CEh index Fh bit 2 set)
3D7h (R/W): Bank Register
bit 0-3 64k bank number. (Write/single bank)
Test for Realtek Chip:
if testinx2(crtc,$1f,$3f) and tstrg($3d6,$f) and tstrg($3d7,$f) then
Realtek!!!.
Video modes:
18h T 80 30 16
19h T 80 43 16
1Ah T 80 60 16
1Bh T 132 25 16
1Ch T 132 30 16
1Dh T 132 43 16
1Eh T 132 60 16
1Fh G 800 600 16 planar
20h G 960 720 16 planar
21h G 1024 768 16 planar
22h G 768 1024 16 planar
23h G 1024 768 4 planar
24h G 512 512 256 packed
25h G 640 400 256 packed
26h G 640 480 256 packed
27h G 800 600 256 packed
28h G 1024 768 256 packed
29h G 1024 1024 256 packed
2Ah G 1280 1024 16 planar