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Re: Building a KISS 68030 Computer [message #6206 is a reply to message #6205]

Tue, 02 April 2019 16:00

denis2342
Messages: 23
Registered: February 2017

Junior Member

jcoffman wrote on Tue, 02 April 2019 21:06

Two more comments from me.

a. Have you tried 66/33mhz mem/cpu osc combo?
b. OOPS, you are using a hard disk. No wonder you need faster UART!! Most of us have used CF cards. AFAIK, you are the only one using a hard drive on the system. An oldie?

--John

question a:
Ok, tried again now and had some luck with 50MHz for memory. I updated the table.

question b:
my compact flash adapter is still on its way from china to me. But I like old spinning rust. It gives acoustical feedback. I just added the LED to have optical feedback too.

I have questions too!

I saw there is some disasm code in the bios, but how do I get to it?

Now some more suggestions for the BIOS:

1. Would be nice if there were some way to reset/restart from the prompt.
2. also a way to start the memcheck from the prompt.
3. the detection of the 16c750 is broken. I quote the datasheet: A write to FCR bit 5 is protected by setting the line control register (LCR) bit 7 = 1.

I had no luck to build the bios myself. tried gcc 5.4 and 8.2. Don't want to downgrade to 4.

Denis

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[Message index]

		Building a KISS 68030 Computer By: denis2342 on Tue, 02 April 2019 08:20
		Re: Building a KISS 68030 Computer By: jcoffman on Tue, 02 April 2019 12:00
		Re: Building a KISS 68030 Computer By: jcoffman on Tue, 02 April 2019 12:06
		Re: Building a KISS 68030 Computer By: denis2342 on Tue, 02 April 2019 16:00
		Re: Building a KISS 68030 Computer By: jcoffman on Tue, 02 April 2019 22:23
		Re: Building a KISS 68030 Computer By: denis2342 on Tue, 09 April 2019 11:11
		Re: Building a KISS 68030 Computer By: berzerkula on Sun, 31 October 2021 20:09
		Re: Building a KISS 68030 Computer By: denis2342 on Sat, 06 May 2023 05:44
		Re: Building a KISS 68030 Computer By: will on Thu, 08 June 2023 14:05
		Re: Building a KISS 68030 Computer By: denis2342 on Thu, 28 September 2023 09:09
		Re: Building a KISS 68030 Computer By: will on Thu, 28 September 2023 14:36
		Re: Building a KISS 68030 Computer By: denis2342 on Fri, 19 April 2019 16:58
		Re: Building a KISS 68030 Computer By: jcoffman on Fri, 19 April 2019 21:14

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