Chief Delphi - TTL on an Apple IIe

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- Programming (http://www.chiefdelphi.com/forums/forumdisplay.php?f=51)

- - TTL on an Apple IIe (http://www.chiefdelphi.com/forums/showthread.php?t=69613)

MarkO

19-10-2008 00:34

Re: TTL on an Apple IIe

Quote:

Originally Posted by dpeterson3 (Post 770903)

Ok. The driver in the book looks like what I need. I have never done assembly programing before. I have always used higher level languages. I noticed in the comments that the baud rate was 110 baud. Does anyone know how to upgrade this to 9600 baud?

How low of a BAUD RATE can the speakJet chip be set to??

The Apple //e, even with Assembler routines like the one in the "January 1978 "Red Book" Apple II manual" might not be fast enough.

First Guess is that the BAUD setting is a Delay in the State Change of the Output. A Higher BAUD Rate, means less Delay.

dpeterson3

19-10-2008 10:41

Re: TTL on an Apple IIe

The lowest possible baud is 2400. I think the computer can handle it though. The CPU speed is 1Mhz, and I think the speed is limited only by the processor. I decided to translate the program to English the best I could, and I am not even seeing where it sends the data, so I am not sure what exactly it can do.

MarkO

19-10-2008 20:19

Re: TTL on an Apple IIe

Quote:

Originally Posted by dpeterson3 (Post 770977)

Way Cool!!!! I just listened to a sample, SpeakJet Sample Output (WAV). It sounds just like the Echo II Speech synthesizer for the Apple ][ computers.

I have been looking for my Hardware Box for my Apple //e. I have the Apple, and a couple of Disk Drives and a Monitor, but the Additional Hardware I have is missing.

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