SpritesMind.Net

Megasis can overclock M68K.

The TFM player doesn't work correctly on my MD2 (or MD1s). If you try to play a file, it halts (scroller still works)... My PD-ROMs are always pass trough test on real hardware. So, I guess it's your fault. I got a 2GB Kingston microSD card with its USB reader for x-mas, what did you get ? I got a ...

TmEE co.(TM) wrote:Hehe, nice !!! Thanks for the code, but I'll end up using my own anyway (I don't really like to use other's code in my stuff).

I don't tell you "copy that". Just a sample. Use VDP scroll control and name table.

TmEE co.(TM) wrote:Merry x-mas everyone !!!

You too.

I just noticed... fixed it... Check this out. You can use my scroll. :) Here is source: ScrollState equ $FFE00C *Free scroll flag ScrollPos equ $FFE00E *Scroll current position ScrollString equ $FFE012 *Pointer to start scroll string Screen equ $FFF000 *ASCII screen *Insert this in VBlank Routine m...

I'd go crazy if I had to do a ALU (and I have no idea where to begin)... Simple summator is (A XOR B) as Result and (A AND B) as Carry. ;) A B C F 0 0 0 0 0 1 0 1 1 0 0 1 1 1 1 0 Maybe you can use ALU chip. Even in USSR IC logic was one. К155ИП3 => 74xx181. It is 4 bits, but it can be expanded. And...

Early SEGA MD AC-DC adaptors was true 10V/1,2A. That is mean, when we load it by 1,2A, it give us at least 10V. But when it not loaded, it can give 17V-20V (17 typically). If you have an 16V capacitor at input - it can be blow. Now, SEGA MD gets all-in-one chips and console needs approximate 10V/0,8...

Shiru wrote:

Chilly Willy wrote:I guess, but "fun" for me would be building a homemade processor, not a homemade cap.

Building a homemade processor entirely from homemade capacitiors - that's real fun.

You gourmet. Resistance and transistors also homemade?

All capacitors are made of paper and foil. To reduce the size - adding electrolyte.

This is quite interesting, especially for emulation accuracy :wink: Emulating system hangs, when accessing to forbidden addresses? Useless. Important information is only # cycles between AS and DTACK. But it still unknown. Maybe I measure it in the future. Does this mean that the Genesis locks when...

Jorge Nuno wrote:WOW!! Only the # cycles elapsed between AS and DTACK remaining

Hmm... Maybe I can do this. But it's take some time. Maybe much time. But it's for real and it will be in "VCLK" or "EDCLK" units.

In the experiments, we get this memory map. Names for signals got from known pictures (Mega01.gif and Mega01.gif). http://img509.imageshack.us/img509/7231/segamapnq0.th.gif Hey excellent work, any chance of probing DTACK activation and number of clk cycles after AS? (speed check) :wink: !DTACK not ...

In the experiments, we get this memory map. Names for signals got from known pictures (Mega01.gif and Mega01.gif).