|
| MODE 7 Teletext Test Pages |
| MDFS::System.Teletext.TestPages | Search |
Standard engineering test pageThis is the standard teletext engineering test page that was transmitted on BBC 1 page 197. It was grabbed from off-air teletext with a BBC teletext adaptor. From the timestamp I downloaded this off air on Monday 21st October 1985, in late afternoon after school lessons. I have tweeked it slightly to set the seconds of the time to be zero, so that line zero ends in "00", and replaced the service text with "ENGINEERING". | |||
TESTPG23 : TESTPG23.dat TEST4023.dat : TEST6423.dat Teletext Engineering Test Page 23-line standard engineering test page | 
TESTPG24H : TESTPG24H.dat TEST4024H.dat : TEST6424H.dat Teletext Engineering Test Page 23-line test page with header line | 
TESTPG24 : TESTPG24.dat TEST4024.dat : TEST6424.dat Teletext Engineering Test Page 24-line standard engineering test page | 
TESTPG25 : TESTPG25.dat TEST4025.dat : TEST6425.dat Teletext Engineering Test Page 25-line standard engineering test page |
| Teletext page file containing rows 1 to 23. Grabbed directly from off-air teletext with a BBC teletext adaptor. | MODE 7 screen dump of a teletext page file containing rows 1 to 23 with a display header added. | Teletext page file containing rows 1 to 24. | Teletext page file containing rows 0 to 24. A standard MODE 7 screen dump. |
| The 40x files are 1K files with each 40-character row
running 'naturally' 40-character offsets.
The 64x files are 2K files with each row padded to 64 bytes, suitable for 'lazy' address decoding. The TESTPG files contain bytes &20-&9F, display characters have bit 7 clear, control codes have bit 7 set. The TEST40xx.dat and TEST64xx.dat files are 6-bit files with bit 7 cleared in all bytes. | |||