exxos's Atari, Amiga & retro forum

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

So actually reading the 68K datasheet...


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

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

So we are now talking to the flash

#bobslaw

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: ↑Thu Jul 04, 2019 10:27 pm 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: ↑Thu Jul 04, 2019 10:39 pm

Icky wrote: ↑Thu Jul 04, 2019 10:27 pm 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

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: ↑Thu Jul 04, 2019 10:46 pm 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: ↑Thu Jul 04, 2019 10:46 pm Was wondering when youd notice it

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: ↑Fri Jul 05, 2019 10:35 am

PhilC wrote: ↑Thu Jul 04, 2019 10:46 pm Was wondering when youd notice it

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: ↑Fri Jul 05, 2019 12:29 pm 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.