Z90251 Datasheet, PDF (51/97 Pages) Zilog, Inc. – eZVision 200 Television Controllers with OSD

Z90255 ROM and Z90251 OTP
32 KB Television Controller with OSD
43
Table 23 VRAM Structure and Memory Map
Character Code Data Bit[11] ,
Character Color C[2:0]
Character Code Data Bit[7:0]
Row0/Column 0 D[11:8]
FE01h
Row0/Column 1 through 22 D[11:8] FE02h
Row 0 Attribute(ROW0_ATTR)
Row 0/Column 0 D[7:0]
Row 0/Column 1 through 22 D[7:0]
FC00h
FC01h
FC02h
Row 0/Column 23 D[11:8]
FE17h
FE18h
Row 0/Column 23 D[7:0]
FC17h
FC18h
Row1/Column 0 D[11:8]
FE21h
Row1/Column 1 through 22 D[11:8] FE22h
Row 1 Attribute(ROW1_ATTR)
Row 1/Column 0 D[7:0]
Row 1/Column 1 through 22 D[7:0]
FC20h
FC21h
FC22h
Row 1/Column 23 D[11:8]
FE37h
FE38h
Row 1/Column 23 D[7:0]
FC37h
FC38h
Row 2 D[11:8]
FE41h
FE58h
Row 2 Video RAM buffer
FC40h
FC41h
FC58h
Row 3 D[11:8]
FE61h
FE78h
Row 3 Video RAM buffer
FC60h
FC61h
FC78h
Row 4 D[11:8]
Row 5 D[11:8]
FE81h
FE98h
Row 4 Video RAM buffer
FEA1h
FEB8h
Row 5 Video RAM buffer
FC80h
FC81h
FC98h
FCA0h
FCA1h
FCB8h
PS001301-0800