# External display for the PX-8

There are several ways to attach a larger screen to the PX-8. The simples and cheapest is 
connect a terminal or terminal emulator to the RS232C port:

- set the Baud rate with the CONFIG.COM utility to match that of the terminal (emulator)
- configure the console output stream with STAT CON:=TTY:. Now output is redirected to the 
terminal. Input is still taken from the PX-8 keyboard. Use STAT CON:=UC1: to redirect both 
screen and keyboard to the terminal. Use STAT CON:=CRT: to revert to the default situation.

## STAT 

Logical devices are used in CP/M to route data streams in the system.

The normal 'usages':

- LST:  normally a printer
- PUN:  originally a paper tape punch, an alternate output device 
- RDR:  originally a paper tape reader, an alternate input device
- CON:  console device; default user input and output 

Physical devices are hardware. The confusing thing is that some are input, some are output
and some are both. And physical devices may have more than one name.

Physical devices (for the PX-8):

- TTY: RS-232C for output, keyboard for input
- CRT: LCD screen for output, keyboard for input
- LPT: RS-232C for output
- PTP: LCD screen for output
- UC1: RS-232C for input and output

Assignments (only implemented are shown):

Output:
- LST:=TTY: directs the LST: to the SERIAL port (default)
- LST:=CRT: directs the LST: to the LCD screen
- LST:=LPT: directs the LST: to the RS232C port
- PUN:=PTP: directs the PUN: to the LCD screen
- PUN:=UP1: directs the PUN: to the RS232C port (default)
Input:
- RDR:=TTY: directs the RDR: to the keyboard (default)
- RDR:=UR1: directs the RDR: to the RS232C port
Input/Output:
- CON:=TTY: directs the CON: to the keyboard and RS232C port
- CON:=CRT: directs the CON: to the keyboard and LCD screen (default)
- CON:=BAT: directs the CON: to the to the RS232C port
- CON:=UC1: directs the CON: to the to the RS232C port

The current configuration is shown with STAT DEV:

Source: PX-8 User's Manual, 3.8.4 STAT, p3-45