Motorola MC68HC05T16 Technical Data Manual page 74

High order bytes
even bytes
7
$xxx
$xxx+$002
$xxx+$01E
indicates a character dot exist
indicates a character dot does not exist
$201
$200
9
$200
$201
$240
$241
$280
$281
$2C0
$2C1
MOTOROLA
9-4
Low order bytes
odd bytes
0 7 4 3 0
$xxx+$001
$xxx+$003
$xxx+$01F
Bits not used when 12x16 dot
matrix is selected
Single Character Map
Select character pointer for RAM or ROM/EPROM
ROM/RAM CH6 CH5
BLNKG BGEN BGCOL2 BGCOL1
Figure 9-1 OSD Character and Row Structure
ON-SCREEN DISPLAY
Character RAM
$0400
Character 0
Character 1
32-bytes per
Character
Character 16
$05FF
Character Pointer
CH4 CH3 CH2 CH1
BGCOL0 CCOL2 CCOL1
$230
$231
$270
$271
$2B0
$2B1
$2F0
$2F1
Last 8 character register pairs of a row buffer
are not used when that row buffer is configured
for displaying 16x16 dot characters
Character ROM/EPROM
Character 0
Character 1
32-bytes per
Character
Character 128
Character Code Register (even bytes)
CH0
CCOL0 Character Attribute Register (odd bytes)
$23E
ROW BUFFER 0
$23F
$27E
ROW BUFFER 1
$27F
$2BE
ROW BUFFER 2
$2BF
$2FE
ROW BUFFER 3
$2FF
MC68HC05T16
$8000
$8FFF
TPG