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| MC6800 cannot interface to Hyperterminal http://www.easy68k.com/EASy68Kforum/viewtopic.php?f=10&t=1212 |
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| Author: | zulnabli [ Tue Sep 24, 2013 6:26 pm ] | |||
| Post subject: | MC6800 cannot interface to Hyperterminal | |||
Hello i have problem why my MC68K cannot interface to Rs232 and cannot use Hyperterminal i use MC68681 and MAX232 please help me find how to Fix this Problem ...
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| Author: | profkelly [ Thu Sep 26, 2013 9:41 pm ] |
| Post subject: | Re: MC6800 cannot interface to Hyperterminal |
Have you tried to connect to it with EASy68K and the Dumbterm program? http://www.easy68k.com/examples/dumbterm.zip |
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| Author: | clive [ Fri Nov 08, 2013 9:39 pm ] |
| Post subject: | Re: MC68000 cannot interface to Hyperterminal |
RS232 interfacing can be difficult. Make sure you know the RX and TX pins on your connectors. Use a scope, check it, and confirm baud rates. Ideally have code that can send a continuous stream of characters. 'U' being a particularly good pattern. Know your cables, understand the connectors on both ends, if the cable is straight-through, or cross-over. Understand if your gender-changer or null-modem adapters is straight-through, or cross-over. Check if you need flow control (CTS/RTS or DTR/DSR) at either end. In the late 80's we had a device called an Interfaker that allow signals to be probed and patched, because every manufacturer had their own connectors, quirks, and implementations of serial interfaces. |
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