Date   : Tue, 25 Oct 1988 03:14:59 GMT
From   : portal!cup.portal.com!MVM@uunet.uu.net (Mark V Miller)
Subject: Pulse Dialing with IMP

Andy Figueroa in <118@oodos01.ARPA>:

; Does anyone know how to get the "improved modem" family of programs such as
; "IMP.COM" to use pulse dialing, without reassembling the program.  I have a
; version on ROM that I use with an Epson PX-8, and another I use with the
; Commodore 128.  Both tone dial only.

  The below applies only to the Epson PX-8; I know nothing about the
  C-128.

  EPXMD3.COM is an adaptation of MDM740 for the PX-8.  It was
  adapted from the MDM740 source (Remember when source was almost
  always included with PD software?) for the PX-8 (Geneva).  Z80
  code was used in the adaptation -- none was used in the original
  MDM740 source; so the entire program was issued in source for the
  PX-8 as a .MAC file.

  Patch EPXMD3.COM location 0103h to 50h (ASCII P) to obtain pulse
  dialing; it should be 54h (ASCII T) for tone.

  There is a little known overlay for the PX-8 for the MDM7xx series
  existing.  If you have a MDM7xx program you are using, patch the
  .COM file at location 0105h as above.  (Note that MODEM7xx and
  MDM7xx are quite different animals.)

  There exists no PX-8 overlay for IMP2xx.  (I would very much like
  someone to make a liar of me in this statement.)

  There does exist a PX-8 overlay for MEX114.  The current version
  number of it is 1.2.

--Mark V. Miller
--MVM@cup.portal.com