iSys C to V User Manual

Page 8

PAGE 8 --- C to V User Guide

3.0 - 1B 4X and Control Characters

Sending the following command bytes to the CTOV box will cause the VPI output to assert the appropriate remote function line. The
VPI print/plot line will be placed low (raster mode) before the remote function line is asserted:

1B 41

remote clear

1B 42

remote line terminate

1B 43

remote end of transmission

1B 44

remote form feed

1B 45

remote reset

1B 50 ZZ asserts repeating remote line terminates from ZZ = 01 hex to

FF hex

NOTE:
These commands must be sent when the CtoV box is in print mode (section 2). The commands will be ignored and interpreted as
raster data if they are sent at any other time.

The CtoV box also obeys standard control characters that must be sent when the CtoV box is in print mode:

04

end of transmission

line feed

form feed

(carriage return - this byte is ignored)

4.0 - Interface Timing

Centronics Timing

Parameter Minimum Maximum

strobe width (A)
strobe to busy (B)
busy width (C)
acknowledge width (D)
init width (E)

200nS
125nS
900nS
550nS
200nS

150nS

note 1
note 2

no max