Advanced Teletext System User Guide

21 Return Time from TSDP
This command returns the local time in ASCII form.
Parameters:
0 21
1 'HH:MM:SS' time string
10 Error flag (&00: time OK, &FF: time not found)
22 Return Date from TSDP
This command returns the local date in ASCII form.
Parameters:
0 22
1 DD/MM/YYYY' date string
12 Error flag (&00: date OK, &FF: date not found)
23 Check CRC
The Teletext OSWORD Commands
This command checks the CRC of the page pointed to. It allows you to check
that the data collected by the Teletext Adaptor has not been corrupted. This
could be very important if the data being collected is of a financial nature.
Parameters:
0 23
1 Pointer to page data (lo-byte)
2 Pointer to page data (hi-byte)
3 Returned flag (0: No CRC, 1:CRC OK, &FF: CRC Failed)
Note: The page data must be in the I/0 processor.
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