From: utzoo!decvax!ucbvax!info-cpm
Newsgroups: fa.info-cpm
Title: TRS80 model II MODEM7
Article-I.D.: ucbvax.251
Posted: Tue Dec  7 03:26:29 1982
Received: Wed Dec  8 02:36:57 1982

>From W8SDZ@Mit-Mc  Tue Dec  7 03:22:14 1982
To: INFO-CPM@BRL
Cc: JDOS@Mit-Ai
Via:  Mit-Mc; 7 Dec 82 1:28-EST
Via:  Brl; 7 Dec 82 1:41-EST
Via:  Brl-Bmd; 7 Dec 82 1:47-EST

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.