To begin with, Intel DX4 was never mentioned and they can't be overclocked that high due to bigger lithography. At least not all and without any voltage increase. Am5x86 is the 486 16kb cache CPU with a 4x multiplier and 350nm lithography. I think some will run fine, as there are 3.3V and 3.45V …

It is not the same. It is totally different design. It just behaves like the other. //edit: It's like an emulator. If you got VICE you havent got a real C64.

This is my AM5x86-133. It's heatsink is just 5mm in height. The other dimensions are same size as the CPU. It is enough for the stock 133MHz CPU. But it will never be enough for a intel DX4-100 running at 133.

Hmm I should have chosen a real measurement, as 50 degrees is pain to one, but not to the other. I just checked with an IR thermometer and without the power-supply-fan. I switched off after 2 minutes reaching 90 degrees. This is what I meant by painfully hot. //edit: 2 different CPUs cant be …

It is not needed, that the fan is mounted directly on top of the heatsink. I did exactly the same like you with my 486DX4 - running at 133MHz, it gets painfully hot. I placed a power-supply-fan about 10cm next to the heatsink blowing against the heatsink. It works perfectly, also this power supply …

I tried a few settings now. frameskip=1 does not change anything, same as frameskip=5 does not change anything. changed to surface, also tried openglnb and overlay. No change in CPU usage. I ran glxgears for testing opengl capability, this goes well. It runs 60fps. Also I played around with cpu core …

I have cycles=auto. When I try to change cycles it does not affect cpu usage by more than 5%. Even if I go down to 100 cycles, where norton commander takes a couple of seconds to start. I'm afraid this almost 9 nine year old mobile i5 is a very weak performer... (i5 520m).

Okay, specs are: OS: Linux (debian, gentoo, both the same) System: i5 520m, 2.40GHz, 4GB RAM DOSBOX: 0.74, 0.74-2, SVN I always have used official version of dosbox. This behaviour is everytime, no program but command shell loaded. See the attached dosbox.conf autoexec section. A few mounts, …

Hi, when I start DOSBOX one of my two cores goes up to 100% usage by dosbox. When I start dosidle in dosbox, this goes down to 80%. On 100% the fan in my laptop starts to make loud noise. On 80% it is much better. Is there a way to reduce this even further? Why isn't idle-handling not yet in dosbox, …

I am already on this, see here: http://www.vcfed.org/forum/showthread.php?66684-MR-BIOS-implementation-in-a-128KB-BIOS-image-for-a-Packard-Bell-PB450-motherboard&p=542795#post542795 As you can read there, I already splitted on an old NCR video and system bios. There are no tools for this. I have to …

If you've ripped up a pin, you dont need to use the good battery holder, new one. You may cut a wire from a resistor from E-garbage and solder this to the holder. Empty the holes on board from tin, plug the new wire through the hole and solder VERY FAST so that it is not loosing connection on the …

Just a few moments ago I hit the 100-fonts-count, that I have dumped. These two ROMs come in very handy. I am searching localized ROMs as well as I have a MDA rom, that seems broken. Thank you very much! I also already added all the localized ROMs I found in this topic. If you have more localized …

ps. if by any chance someone submits a Greek rom for the original IBM CGA please tell me, I'd like to change the rom in mine so I get Greek characters in old programs :happy: Right now I am dissecting a lot of ROMs to compare. If you tell me which font you want to have in which ROM, I could patch …

Here is another one, a very nice looking 8x14 from a NCR GD5428.

And finally I found the 8x16 😀

I started disassembling the ROM with IDA Pro. I already found the 8x8, the 8x16 is next. Two ways to find the charset: 1) First three bytes of the image are signature+size of ROM. Directly after this comes a JMP to the init routine. In that init routine interrupts 0x43 and 0x1F are set up. 43 holds …

How did you extract the fonts from a ROM dump? And how did you create these images? I recently have dumped a Commodore 386SX-25 with an onboard AVGA2/Cirrus GD5402. I have the ROM-dump and now I want to find the start of the charset(s) in there, without using the 386 (INT10).