CBM-230/231 User’s Manual

(2)Parity error

When a parity check has been specified and an error is detected at parity check time, that data is stored in the buffer as "?."

(3)Overrun error

When an overrun error is detected, that data is stored in the buffer as "?."

7.3.4Data Receiving Control

When DTR/DSR control has been selected, if the DTR signal is at SPACE, the data from the host side can be received, but when at MARK, it cannot be received. When DTR/DSR control has not been selected, the data from the host side can be received after transmitting XON, but it cannot be received after transmitting XOFF.

7.3.5 Buffering

There are DTR and TD signals as control signals for data transfer to the input buffer.

(1)

DTR signal (Refer to 7.3

1)

(2)

TD signal (Refer to 7.3

1)

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CITIZEN

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Citizen Systems CBM-231 manual Data Receiving Control, Buffering