=> R0 = 10
R1 = 9 byte block :
0 character code
<= R1 = buffer containing :
1 top row of def.
.
.
8 bottom row of def.
This SWI reads a character definition. Valid values are 32-126 and 128-256. Values 2-5 returns ECF pattern 1-4. Value 6 returns dot-dash pattern.
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