Tandy 26-3334 Service Manual page 20

GRAPHICS MODES
16
Color Modes: (CRES1
=
1,
CRESO
= 0)
Byte from DRAM
Bit
7
PA3, First Pixel
Bit
6
PA2, First Pixel
Bit
5
PAI, First Pixel
Bit
4
PAO, First Pixel
Bit
3
PA3,
Second Pixel
Bit
2
PA2, Second Pixel
Bit
1
PAI, Second Pixel
Bit
PAO, Second Pixel
4
Color Modes: (CRES1
=
0,
CRESO
=
1)
Byte from
DRAM
Bit
7
PAI, First Pixel
Bit
6
PAO, First Pixel
Bit
5
PAI, Second Pixel
Bit
4
PAO, Second Pixel
Bit
3
PAI,
Third Pixel
Bit
2
PAO, Third Pixel
Bit
1
PAI, Fourth Pixel
Bit
PAO, Fourth Pixel
2
Color Modes:
(CRES1
= 0,
CRESO
=
0)
Byte from
DRAM
Bit
7
PAO,
First Pixel
Bit
6
PAO, Second Pixel
Bit
5
PAO, Third Pixel
Bit
4 PAO,
Fourth Pixel
Bit
3
PAO, Fifth Pixel
Bit
2
PAO,
Sixth Pixel
Bit
1
PAO, Seventh Pixel
Bit
PAO, Eighth Pixel
Pallette Addresses
PA3 PA2
PAI PAO
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Address
of Contents Displayed
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