Parallel Format - Zenith Z-100 Reference Manual
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page 8.4
Serial and Parallel Input/Output
Parallel Format
The format for each of the three parallel maps is shown in Table 8.2.
Table 8.2. Parallel Map Format
BYTE
PARA M E TER DESCRIPTION
Bits 0-3 perform a map
Bit 4 strips parity on the output
Bit 6 maps l owercase t o uppercase
Pad character af t er carr i age r etu rn
Number of pad characters to issue
ROM data segment time-out value for a parallel device
Serial Format
The format for the two serial maps is shown in Table 8.3.
Table 8.3. Serial Map Format
BYTE
PARA M E TER DESCRIPTION
Type of handshake used by device
Attributes of transmission
Pad character after carriage return
Number of pad characters to issue
Hag for burst count for ETX/ACK
Counter for ETX/ACK
Device initialization
Reserved
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