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Chip Ram access slow

Open radi7777 opened this issue 2 years ago • 4 comments

Hi, looks like programs starting lower than on regular 68030.. some games are slower than on stock a500... when you run an Hires interlace mode 8 colors on a RGB monitor the system feels like glue ... looks like adressing chipram is slow.... is this a bug or is it just how it is ?? bekaus of limitations of Pistorm ?

radi7777 avatar Mar 05 '22 12:03 radi7777

Please add some more information. Kickstart version, workbench version. Are you using SD card as hard drive or some other solution? I need more information.

Please keep in mind chip ram is in general relatively slow on current PiStorm version (about 2MB/s) so maybe this is what you see.

michalsc avatar Mar 05 '22 13:03 michalsc

Hi Michael, Im running an Amiga500 rev5 with 1Mb Chip / Kick 3.2 eprom Workbench 3.2. As harddrive Im using the Pi 3a+ SD card ( 128GB) As kick.rom im using 3.2.1 on the SD card.

I think as long as the Chip ram is slow its really a problem for Games... ( WhDload 98 % are fine ) but disk versions are really a problem ...

Thanx for your hard work.. really awesome project...

is there any chance to fix chipramspeed at all??? maybe pistorm isnt the right Base for your project

radi7777 avatar Mar 05 '22 16:03 radi7777

@radi7777 Yes, there is a chance chipram speed will be fixed. But currently I have too much on my todo list for a immediately fix. As intermediate solution you can overclock the Raspberry Pi "Core" frequency and use the experimental PiStorm Firmware. This reports 96% to 100% Chipram Speed in Sysinfo.

captain-amygdala avatar Mar 06 '22 10:03 captain-amygdala

@captain-amygdala Tried overclocking RPi3A to 1500MHz, but there was no change in Chip speed. Where can we find this experimental Firmware?

I see somenthing along these lines was merged with raspi source but not with the pistorm source.

elerion64 avatar May 05 '23 08:05 elerion64