exxos's Atari, Amiga & retro forum

:cheer: :cheer: :cheer: :cheer: :cheer: :cheer:

I get back "BFBF" as expected now. Its the ID from both flash chips at once on the bus (flash is 8bit wide so 2 chips used to get 16bit)


So it seems...

Data being written to the bus isn't actually valid until UDS/LDS go low :roll:

So actually reading the 68K datasheet... :lol:


So what I did was to delay the flash for a clock cycle, which basically simulates waiting for LDS,UDS going low.. THEN latch the data on the bus.. What would be happening before would be I would just be latching in 1's all the time as nothing would be driving the bus at that point :roll:

Incidentally, I had to use Keli's numbers , so he was right in that I needed to rotate some bits :thumbup:

So we are now talking to the flash :D :D

#bobslaw

:thumbup: Well done - great work.

I just got one of the other RTC / Flash (Flashy Clock) boards working, sockets and pins are the biggest PITA ever.

Icky wrote: 04 Jul 2019 22:27 :thumbup: Well done - great work.

I just got one of the other RTC / Flash (Flashy Clock) boards working, sockets and pins are the biggest PITA ever.

Welcome to the Socket Haters Society..

PhilC wrote: 04 Jul 2019 22:39

Icky wrote: 04 Jul 2019 22:27 :thumbup: Well done - great work.

I just got one of the other RTC / Flash (Flashy Clock) boards working, sockets and pins are the biggest PITA ever.

Welcome to the Socket Haters Society..

Yep they are evil. Nice avatar PhilC :)

Was wondering when youd notice it :lol:

I might see if I can fit that key to one of my STs. Think it came from a Dragon 32, cant remember.

PhilC wrote: 04 Jul 2019 22:46 I might see if I can fit that key to one of my STs. Think it came from a Dragon 32, cant remember.

Looks like a BBC Micro Break key :)

PhilC wrote: 04 Jul 2019 22:46 Was wondering when youd notice it :lol:

I might see if I can fit that key to one of my STs. Think it came from a Dragon 32, cant remember.

Needs a hammer above it Phil ;)

exxos wrote: 05 Jul 2019 10:35

PhilC wrote: 04 Jul 2019 22:46 Was wondering when youd notice it :lol:

I might see if I can fit that key to one of my STs. Think it came from a Dragon 32, cant remember.

Needs a hammer above it Phil ;)

I thought about that but it took me 30 mins just to make it small enough to fit in the 12k required

PhilC wrote: 05 Jul 2019 12:29 I thought about that but it took me 30 mins just to make it small enough to fit in the 12k required

Oh, I can increase the size to 20k or whatever...

Done a quick flash routine..

Only writes to address 0, I need to program up the erase sectors routine next to clear the full banks which will hold TOS next.