Date   : Tue, 07 Dec 1982 01:28:00-EST
From   : Keith Petersen <W8SDZ@Mit-Mc>
Subject: TRS80 model II MODEM7

This was sent out to the list some time back, but
bears repeating for those who may not have seen it.
It's easier than you think to put up MODEM2xx or MODEM7xx
on the Model II.

---

Date: 21 July 1981 2201-EDT (Tuesday)
From: Bill Sholar <William.Sholar at CMU-10A>
Sender: William.Sholar at CMU-10A
To:   INFO-CPM
Re:   TRS-80 Model II MODEM Equates & Ports

       Since the documentation on the Mod 2 TRS-80 does not bother
to discuss hardware, the following port addresses and equates for
MODEM.ASM programs might prove useful to anyone using this machine:

       MODCTLP EQU     0F6H    ;status/control port A
       MODSNDB EQU     04H     ;bit 2 indicates ready to send
       MODSNDR EQU     04H     ;  with the bit set to 1
       MODRCVB EQU     01H     ;bit 0 indicates character received
       MODRCVR EQU     01H     ;  with the bit set to 1
       MODDATP EQU     0F4H    ;data port A

       These values, plugged into MODEM.ASM, allow the TRS-80 Mod 2 to
function without any special system calls or other variations from the
existing MODEM.ASM program, assuming the port has been set up using the
SETUP (Pickles & Trout's CPM), CONFIG (Lifeboat's CPM) or SET (Cybernetics'
CPM) utility for the appropriate baud rate, etc.