Can all registered uses please login, even just for a few minutes..
It helps build a picture where our "good traffic" is coming from..
Thanks :)

GLUE on FPGA with H5 Phoenix platform

Progress on our FPGA cores.
Post Reply
ijor
Posts: 853
Joined: Fri Nov 30, 2018 8:45 pm

Re: GLUE on FPGA with H5 Phoenix platform

Post by ijor »

As I mentioned in the other thread, I like to test not only things that should work, but also things that should not. Often this is more difficult to test, but it is important. Closure might fail in a very rare wakeup state combination. This happens in original hardware and also on these cores, confirming better accuracy:

Bad display at Closure on rare Wakestate 2 combination.
Bad display at Closure on rare Wakestate 2 combination.
ClosureWs2BadSfifterWs.jpg (319.26 KiB) Viewed 2544 times


Btw, don't try this at home. It might require dozens of power cycles to get the right (wrong) wakestate.
http://github.com/ijor/fx68k 68000 cycle exact FPGA core
FX CAST Cycle Accurate Atari ST core
http://pasti.fxatari.com
Top
User avatar
Cyprian
Posts: 567
Joined: Fri Dec 22, 2017 9:16 am
Location: Warszawa, Poland
Contact:
Contact Cyprian

Re: GLUE on FPGA with H5 Phoenix platform

Post by Cyprian »

this issue looks cool,
Atari: V4sa TT030 Falcon030 Mega ST Mega STe 1040 STe 520 STm 800XL 65XE Jaguar Lynx I/II 7800 Portfolio / VME: ATW800/2 Mach64 Mach32 ET4000 CrazyDots PAMNet / SM146 SC1435 SM124 / Antonia2 ATSpeedC16 TF536 PAK68/3
Megafile30 Atari1050 DDDHDD XCA12 SF314 / AVGCART SUBCART SidecarTridge ACSI2STM FujiNet LynxMultiCard SkunkBoard CosmosEx SatanDisk UltraSatan USBFloppyDriveEmulator SDrive SIO2PC Eiffel
http://260ste.atari.org
Top
User avatar
Icky
Site Admin
Site Admin
Posts: 4433
Joined: Sun Sep 03, 2017 10:57 am
Location: UK

Re: GLUE on FPGA with H5 Phoenix platform

Post by Icky »

Reminds me of one of the states the FPGA Shifter was getting into

IMG_5915.png
IMG_5915.png (864.85 KiB) Viewed 2533 times
Top
ijor
Posts: 853
Joined: Fri Nov 30, 2018 8:45 pm

Re: GLUE on FPGA with H5 Phoenix platform

Post by ijor »

Icky wrote: Thu Nov 07, 2024 1:49 pm Reminds me of one of the states the FPGA Shifter was getting into
Hi Icky. Yes, looks similar although not exactly the same behavior. In any case, it is true that this issue is more Shifter than GLUE or MMU specific. I still need to do a couple of things on the 3 other cores (GLUE, MMMU & BLITTER) and hopefully will try the SHIFTER core on your Phoenix Shifter board shortly.
http://github.com/ijor/fx68k 68000 cycle exact FPGA core
FX CAST Cycle Accurate Atari ST core
http://pasti.fxatari.com
Top
Post Reply

Return to “FPGA DEVELOPMENT”