Search found 2758 matches

by Dave
Fri Mar 08, 2013 12:45 am
Forum: Hardware
Topic: Fun things to do with an MC68EC020....
Replies: 153
Views: 64683

Re: Fun things to do with an MC68EC020....

Absolutely, everything I am working on will be 'Open'... For most of the smaller projects I am happy to order PCBs and components and do assembly, then sell them myself and send half over to Rich at RWAP/SellMyRetro. Today I received in the mail two 68000s - one FN10 and one FN16. If I can get the T...
by Dave
Thu Mar 07, 2013 6:04 pm
Forum: For Sale
Topic: SOLD: Another Gold Card on SellMyRetro....
Replies: 14
Views: 7573

Re: Another Gold Card on SellMyRetro....

The card is now £380.
by Dave
Thu Mar 07, 2013 4:10 pm
Forum: Hardware
Topic: Fun things to do with an MC68EC020....
Replies: 153
Views: 64683

Re: Fun things to do with an MC68EC020....

First, I understand that the SGC copies the OS ROM into a wide bus area, makes a couple of modifications to the image, then write protects that RAM and restarts the CPU booting from the faster, edited copy of the OS image held in RAM. The OS image in ROM is so narrow, and accesses to that range so f...
by Dave
Thu Mar 07, 2013 1:04 am
Forum: Hardware
Topic: Fun things to do with an MC68EC020....
Replies: 153
Views: 64683

Re: Fun things to do with an MC68EC020....

This post is aimed at the lay person, who hasn't ever designed hardware. So... One of the neat tricks of the 68EC020 is that it can use an 8, 16 or 32-bit bus. On the fly. The address decoder can be configured to not just select devices, but also let the CPU know the width of the data bus for that a...
by Dave
Wed Mar 06, 2013 10:11 pm
Forum: For Sale
Topic: SOLD: Another Gold Card on SellMyRetro....
Replies: 14
Views: 7573

Re: Another Gold Card on SellMyRetro....

£10, fixed, thanks!

I already had an email offer to buy it for £300 so I suspect it might go quite quickly.
by Dave
Wed Mar 06, 2013 7:53 pm
Forum: For Sale
Topic: SOLD: Another Gold Card on SellMyRetro....
Replies: 14
Views: 7573

SOLD: Another Gold Card on SellMyRetro....

Hi all, I've posted another fundraiser Gold Card on SellMyRetro.com. Yes, it's another reverse auction, too. Since the last one sold so quickly (five hours!), I'm starting this one optimistically high at £400, and will lower it £10 every day. (Rich, maybe you should offer a reverse auction option?) ...
by Dave
Wed Mar 06, 2013 7:00 pm
Forum: Hardware
Topic: Fun things to do with an MC68EC020....
Replies: 153
Views: 64683

Fun things to do with an MC68EC020....

Clock it at 24 MHz, and give it 16 MBytes of 32 bit wide SRAM to play with. Put a 32-bit wide Minerva image at $0, so you don't have to do SGC trickery. Try to figure out video since that's forced to be an 8-bit data bus :) Things I learned: it's slower at 25 MHz than 24 MHz due to inbuilt RAM timin...
by Dave
Tue Mar 05, 2013 4:53 pm
Forum: Hardware
Topic: MC1377P datasheet and functionality...
Replies: 8
Views: 4729

Re: MC1377P datasheet and functionality...

Dude!
by Dave
Tue Mar 05, 2013 2:42 pm
Forum: Hardware
Topic: MC1377P datasheet and functionality...
Replies: 8
Views: 4729

Re: MC1377P datasheet and functionality...

Well, I checked it out, and the 1377 simply won't do what I want in this thing I'm experimenting with.
by Dave
Mon Mar 04, 2013 10:36 pm
Forum: General QL Chat
Topic: Email
Replies: 5
Views: 3746

Re: Email

Dave, I'm not sure where you are, but I think some of your statements are off. >Everyone uses cable I know a lot of folks that don't use cable for Internet access (me for one). It does seem to be the case that outliers tend to know a lot of other outliers. In the US, the statistics speak for themse...