exxos's Atari, Amiga & retro forum

Icky wrote: 19 Mar 2020 20:59 @exxos - I am sure I can fit another chip on that board somehow :) However I think we now have to task of unpicking our conversations as to how we were going to get this thing to work.

Well the hack jobs I did worked, so if its doesn't work, its your PCB :lol:

exxos wrote: 19 Mar 2020 22:31

Icky wrote: 19 Mar 2020 20:59 @exxos - I am sure I can fit another chip on that board somehow :) However I think we now have to task of unpicking our conversations as to how we were going to get this thing to work.

Well the hack jobs I did worked, so if its doesn't work, its your PCB :lol:

Got it to boot with from the firmware @exxos was using on the V3 - 1508 mod :)

Now to start with the RTC first to see if I can get that working.

Mine arrived today :)

Flash, RTC, alt-ram all packed into a 68K footprint. Just have to port the firmware over from the previous board next :)



In case anyone missed the test board..
ROM selections are saved in the NVRAM and restored at power up as well :)

:thumbup:

And here it is in situ in my DEV motherboard which is also sporting the MMU and GLUE towers :)

You do like your towers don't you @Icky

That board does look good though.

Icky wrote: 29 Mar 2020 11:46 :thumbup:

And here it is in situ in my DEV motherboard which is also sporting the MMU and GLUE towers :)

That board must reside near the ocean. You can tell be the larger houses are on stilts.

Have been working through the board all day and have finally got the RTC and Flash functions working. We have found a few oddities along the way for example the RTC chip was initially had got itself into an always busy state and had to prod it to make it think it was not so it could be initialised. We working on ironing out the software and once we have the RTC and Flash areas solid we will start on the ALT-RAM.

Any how the clock functions work and am able to program and boot to one of 5 banks, one being the motherboard ROM, and then the 4x Flash banks. I'll do a video later on the programming and booting to each bank.

In the meantime here is a really wobbly video of the board programming a bank. Lets see if you can spot when the flash is being programmed :)

Got mine plugged in... Just waiting on Icky to stop messing with me crappy software and send it me next :lol: :roll:

Yeah hurry up @Icky keep poor @exxos busy during his lockdown. Hes already crazy and we don't want him getting worse / better. (Delete as appropriate)

PhilC wrote: 31 Mar 2020 16:55 Yeah hurry up @Icky keep poor @exxos busy during his lockdown. Hes already crazy and we don't want him getting worse / better. (Delete as appropriate)

I could update the software myself, but well, its tea-time, and icky may have sent it by then anyways.. i'm willing to take the chance...