To be honest I am completely uncertain whether this one works or not.
Here is the CPU.C file with the extra CPU speeds added:
Optional: More CPU speed grades.
Re: Optional: More CPU speed grades.
they work, however, those are just non-existant in real WinChip CPUs, I've added them for speed compatibility for older apps requiring a 586-class CPU.
Re: Optional: More CPU speed grades.
Yeah. PS: Have you tested the 8088/2?SA1988 wrote:they work, however, those are just non-existant in real WinChip CPUs, I've added them for speed compatibility for older apps requiring a 586-class CPU.
I wanna know how it compares in emulation to the 8088/4.77.
Also, do the new CPUs show up in the config dialog?
Last edited by nerd73 on Sun 19 Oct, 2014 7:46 pm, edited 1 time in total.
Re: Optional: More CPU speed grades.
I think it's out of standard, the original IBM PC cannot work with cpu speeds lower than 4.77 as it was standard back then.nerd73 wrote:Yeah. PS: Have you tested the 8088/2?SA1988 wrote:they work, however, those are just non-existant in real WinChip CPUs, I've added them for speed compatibility for older apps requiring a 586-class CPU.
I wanna know how it compares in emulation to the 8088/4.77.
Re: Optional: More CPU speed grades.
True, well, except the PCjr, which used the 4-cycle for refreshing it's dynamic RAM, effectively making the clock speed 3.58 MHz.SA1988 wrote:I think it's out of standard, the original IBM PC cannot work with cpu speeds lower than 4.77 as it was standard back then.nerd73 wrote:Yeah. PS: Have you tested the 8088/2?SA1988 wrote:they work, however, those are just non-existant in real WinChip CPUs, I've added them for speed compatibility for older apps requiring a 586-class CPU.
I wanna know how it compares in emulation to the 8088/4.77.
Edit: Got it compiled. There will be duplicate CPU maker options in the dialog box. Try to avoid them, their there just to cause trouble.
Re: Optional: More CPU speed grades.
I've added very, very early Pentium OverDrive emulation.
It's basically WinChip emulation, but on the 486 boards.
Using this updated file will give you it.
EDIT: Removed file, will work on trueish POD emulation using the rev 180+ pentium emulation.
I'll try to do better emulation tomorrow.
It's basically WinChip emulation, but on the 486 boards.
Using this updated file will give you it.
EDIT: Removed file, will work on trueish POD emulation using the rev 180+ pentium emulation.
I'll try to do better emulation tomorrow.
Last edited by nerd73 on Wed 19 Nov, 2014 2:28 am, edited 1 time in total.
- SarahWalker
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Re: Optional: More CPU speed grades.
The interpreter can not achieve anything even remotely like Pentium timing, so please do not try to add it.
Re: Optional: More CPU speed grades.
True, the WinChip emulation has mostly 486 timings, so WinChip 100 basically is as fast as a DX4/100 or Pentium 60/66.TomWalker wrote:The interpreter can not achieve anything even remotely like Pentium timing, so please do not try to add it.
Added Intel RapidCAD emulation (Intel's 486DX upgrade CPU for 386 systems).
Re: Optional: More CPU speed grades.
I could try to build a reference interpreter for the Pentium, so that you could figure out a way to fudge the timings just right.TomWalker wrote:The interpreter can not achieve anything even remotely like Pentium timing, so please do not try to add it.