Radio Shack TRS-80 Model 3 Operation And Reference Manual page 94

TRS-80 MODEL III
Address Initial
Dec Hex Contents Contents
16916 4214
Video Display Scroll Protect 0
From Oto 7. Greater values
are interpreted in modulo 8
16919 4217 Time-Date
00:00:00
Six binary bytes:
00/00/00
SSMM HHYYDD MM
16928 4220 $ROUTE Destination Device
N/A
Two-byte I/O designator
16930 4222
$ROUTE Source Device N/A
Two-byte I/O designator
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