@FOLLETT

I've gotten the captcha each time I've used "search" while not logged in.

Perhaps that is what the poster is experiencing or similar.

#6

Whooops, hit modify instead of reply, really need to move that button, .

Ah, thats delibrate. Its not uncommon, I think EAB do also if not logged in.

@FOLLETT

I've gotten the captcha each time I've used "search" while not logged in.

Perhaps that is what the poster is experiencing or similar.

#6

The Amiga 1000 had some serious issues with it's case. A major crack was found on one corner, which had a badly bodged repair. The case was also stained with an odd rusty residue. Inside the rust theme continued, with the power supply displaying water damage. Lets see what I can do to get the main machine back in a fit state!

Video: Amiga1000 CH02: Case & PSU Repairs

Series: Amiga 1000 Series link

Subscribe to the Channel

Enjoy!

Will check it out… 👍🏻

Hi, i installed a temperature sensor under the fan of the powerPC of my Cyberstorm PPC board. I actually have 35 °C. Do you know the temperature value not to exceed to avoid damages on this board ?

Thanks.

I made modifications to this simple 14MHz accelerator by Dennis:
https://github.com/Mathesar/14mhz-accelerator

It runs at either 21 or 28MHz with a configurable PLL.  Photo attached, along with SysInfo and problem shown in ATK.

It's quite speedy (approximately 16MHz 030 A3000 equivalent according to SysInfo result), largely thanks to the zero waitstate memory at that processor frequency, games like Hard Drivin' and 4D Sports Driving (Stunts) have a nice frame rate, and DREAD demo is super smooth.  Every game that runs on the unmodified 14MHz accelerator also runs with the 28MHz modification.  The problem is that music routines run too fast in most games.  A Goggle search pointed me to a gentleman with similar sound symptoms caused by a weak /DTACK pullup, which ultimately led me to discover that my Amiga is having much higher interrupt frequency as measured in ATK.  This problem is not present with unmodified 14MHz accelerator.

My mind isn't as sharp as it was after I finished my university computer engineering degree more than a decade ago, so I'd like to ask for some help figuring out what causes the higher interrupt count and figure out what I should do to improve it.

The Amiga board I am using here is an NTSC 500 rev.5, and the only modifications I made to the accelerator are substituting a configurable PLL, a 10ns delay line to line up the clock edges, and using the buffered 7MHz reference clock from the PLL instead of the one from the system to feed the /DTACK and /AS synchronizing flip-flops because it has a nicer waveform with less skew.

Help is appreciated.