Specifications

Chapter 3 Hardware
ReadyBoard 800 Reference Manual 35
Pin # Signal Description
13 PTSLCT
WGATE*
Printer Select – This is a status output signal from the printer. A High State
indicates it is selected and powered on.
Floppy Write Enable – Drive signal to enable current flow in the write head.
14 AUTOFDX*
DRVEN0*
Parallel Auto Feed* – This is a request signal into the printer to automatically
feed one line after each line is printed.
Floppy Drive Density Select Bit 0
15 ERR*
HDSEL*
Parallel Error – This is a status output signal from the printer. A Low State
indicates an error condition on the printer.
Floppy Head Select – Selects the side for Read/Write operations (0 = side 1,
1 = side 0)
16 PINIT*
DIR*
Printer Initialize* – This signal used to Initialize printer. Output in standard
mode, I/O in ECP/EPP mode.
Floppy Direction – Direction of head movement (0 = inward motion,
1 = outward motion).
17 SLCTIN
STEP*
Parallel Select In – This output signal to the printer is used to select the printer.
I/O pin in ECP/EPP mode.
Floppy Step – Low pulse for each track-to-track movement of the head.
18 GND Ground
19 GND Ground
20 GND Ground
21 GND Ground
22 GND Ground
23 GND Ground
24 GND Ground
25 GND Ground
26 NC Not Connected
Notes: The shaded area denotes power or ground. The signals marked with * = Negative true logic.