Opening a cash drawer with Parallel Port Connected T88IV
Cash draw will not open when connected to t88IV parallel printer. I have a serial T88III which proved the cash drawer open. The way I get the cash drawer to open with a serial printer. The command jumps to DOS load gwbasic
10 open "com1:9600,n,8,1 as#1
20 Print #1, chr$(27);"p";CHR$();CHR$(100);CHR$(255)
30 SYSTEM
then returns to command. I found the syntax for parallel port
Thank you
Paul Hanna

Cash Draw open?
Not sure what your problem is here?
Are you saying that you have a cash draw that used to work through a parallel port but you managed to get it working through a serial port?
Normally for commands to do with serial ports - as you point out are prefixed with COM1. Have you tried prefixing with LPT1 instead to see if the parallel port responds in the same way? In other ways using LPRINT is also a good way of sending the output you have on your PRINT line direct to printer.