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by rpineau
Mon Aug 28, 2017 7:24 pm
Forum: HARDWARE DISCUSSIONS
Topic: 16BIT ROM CART THOUGHTS
Replies: 134
Views: 38556

Re: 16BIT ROM CART THOUGHTS

Yep. It's not so much what the CPU does but what the code does. If the code does a 8 bit access for some reason, it will use /LDS or UDS (depending on the address). The code part will always be read as 16bit as this is the minimum instruction size. The data can be read in 8 or 16 bits depending on w...
by rpineau
Mon Aug 28, 2017 6:57 pm
Forum: HARDWARE DISCUSSIONS
Topic: 16BIT ROM CART THOUGHTS
Replies: 134
Views: 38556

Re: 16BIT ROM CART THOUGHTS

When the 68000 does a 8 bit read, it asserts the proper uds/lds signals but you can indeed place 16bits of data on the bus and the CPU will read what it needs.
You just need to make sure the ROM is selected for /UDS or /LDS (via an and gate for example as you said.).
Rodolphe
by rpineau
Sun Aug 27, 2017 6:40 pm
Forum: DISPLAYS & CONVERTERS
Topic: XRGB Framemeister
Replies: 7
Views: 5170

Re: XRGB Framemeister

That is snazzy :) It's like a better version of those arcade upscaling things that are about. https://img.auctiva.com/imgdata/1/3/5/4/2/9/5/webimg/579503810_o.jpg?nc=636394215331921230 These things claim to do a few different types of input and output (in this case VGA), there's loads of versions a...
by rpineau
Thu Aug 24, 2017 3:45 am
Forum: HARDWARE ISSUES
Topic: Floppy header pinout - loose pin
Replies: 25
Views: 9490

Re: Floppy header pinout - loose pin

Ping 20 of the WD goes through the 74LS06 so you won't have continuity all the way. You should have continuity between the WD and the 7406 and from the output of that gate on the 7406 and the pin on the floppy connecter (the filter beads are inductance so they should show as continuous if there is n...
by rpineau
Wed Aug 23, 2017 5:53 pm
Forum: HARDWARE ISSUES
Topic: Floppy header pinout - loose pin
Replies: 25
Views: 9490

Re: Floppy header pinout - loose pin

I took a quick look at the schematics and pin 16 is Motor On. Both the internal connector and the external floppy plug are connected to that pin on the mother board (going through a 74LS06 gate) from the FDC pin 20. So they are the same signal. If the track is broken you might be able to run a small...
by rpineau
Wed Aug 23, 2017 5:44 pm
Forum: INTRODUCE YOURSELF
Topic: Greetings from Germany
Replies: 9
Views: 3746

Re: Greetings from Germany

francouai wrote:
Tue Aug 22, 2017 5:43 pm
Rodolphe, are you french?

Thomson MO5 and TO7 was used into all the french schools early 1985.
It was a disaster :lol:
Yes am I.. I mean no I'm not .. I'm Breton :P ;)
And yes that was a total sh*t show.
Rodolphe
by rpineau
Tue Aug 22, 2017 5:14 pm
Forum: INTRODUCE YOURSELF
Topic: Greetings from Germany
Replies: 9
Views: 3746

Re: Greetings from Germany

Ah the good old day of the MO5 and TO7.. and me and my friends knowing more about computer than the teachers :D
Rodolphe
by rpineau
Sat Aug 19, 2017 11:18 pm
Forum: INTRODUCE YOURSELF
Topic: Hello I guess :)
Replies: 17
Views: 5837

Re: Hello I guess :)

I never "liked" the amiga, mostly because of the OS. The hardware is fine (it's great actually and better than the ST in multiple area), and having people who know a lot about it gives an extra perspective on potential hardware issue we might encounter when we don't know if it's a chipset issue or t...
by rpineau
Thu Aug 17, 2017 6:15 pm
Forum: INTRODUCE YOURSELF
Topic: Hello I guess :)
Replies: 17
Views: 5837

Re: Hello I guess :)

he's good at dragging us in stuff :)
by rpineau
Thu Aug 17, 2017 6:10 pm
Forum: INTRODUCE YOURSELF
Topic: Hello
Replies: 1
Views: 1350

Hello

:)

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