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-
- FROM:
- SABALINE SAN DIEGO (619)692-1961
- 24 HOUR BBS 300/1200/2400 BAUD
- SYSOP DON SABA
-
- SUBJECT:
-
- OVERLAYS FOR MODEM PROGRAMS FOR THE APPLE:
-
- Several years ago, Doug Laing (Garden Grove) introduced me
- to the Ray Klein SIO serial card for the Apple. This card does
- not use a slot, but piggy-backs on to the PCPI card in the same
- way as the Ram expansion card. This arrangement offers several
- advantages.
-
- 1. Two Serial Ports are available.
- 2. SIO Uart with CTC chip control baud rates without
- hardware switches.
-
- It has been my experience to download with the Apple thru
- port 1 of the SIO card, and use a Null Modem to transfer or
- upload them to my other computers.
-
- The enclosed overlays have been tested specifically with
- MDM740, IMP241, and MEX114. Conditional assembly has been tested
- with other cards; however, these overlays have been designed
- primarily around the SIO card.
-
- What the world needs now, is a Bye500 Apple Overlay for this
- card. If anyone comes up with one, please upload it to our
- board.
-
- Doug Laing should be given credit for the early
- configuration of this card, and the overlays in this library came
- from his BY-19sio.asm file.
-
- --Don Saba