
SLES214C – DECEMBER 2007 – REVISED SEPTEMBER 2010
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7.2.60 WSS/CGMS-A Data Registers
Address
94h–99h
NTSC
Address
7
6
5
4
3
2
1
0
BYTE
94h
b5
b4
b3
b2
b1
b0
WSS field 1 byte 1
95h
b13
b12
b11
b10
b9
b8
b7
b6
WSS field 1 byte 2
96h
b19
b18
b17
b16
b15
b14
WSS field 1 byte 3
97h
b5
b4
b3
b2
b1
b0
WSS field 2 byte 1
98h
b13
b12
b11
b10
b9
b8
b7
b6
WSS field 2 byte 2
99h
b19
b18
b17
b16
b15
b14
WSS field 2 byte 3
These registers contain the wide screen signaling (WSS/CGMS-A) data for NTSC.
Bits 0–1 represent word 0, aspect ratio.
Bits 2–5 represent word 1, header code for word 2.
Bits 6–13 represent word 2, copy control.
Bits 14–19 represent word 3, CRC.
PAL/SECAM
Address
7
6
5
4
3
2
1
0
BYTE
94h
b7
b6
b5
b4
b3
b2
b1
b0
WSS field 1 byte 1
95h
b13
b12
b11
b10
b9
b8
WSS field 1 byte 2
96h
Reserved
97h
b7
b6
b5
b4
b3
b2
b1
b0
WSS field 2 byte 1
98h
b13
b12
b11
b10
b9
b8
WSS field 2 byte 2
99h
Reserved
Bits 0–3 represent group 1, aspect ratio.
Bits 4–7 represent group 2, enhanced services.
Bits 8–10 represent group 3, subtitles.
Bits 11–13 represent group 4, others.
62
Internal Control Registers
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