Search found 732 matches

by HardWareMan
Wed Dec 26, 2007 2:26 pm
Forum: Tools
Topic: overclockable emulation
Replies: 4
Views: 4042

Megasis can overclock M68K.
by HardWareMan
Wed Dec 26, 2007 4:38 am
Forum: Demos
Topic: Small X-mas demo
Replies: 17
Views: 16493

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 ...
by HardWareMan
Tue Dec 25, 2007 1:13 pm
Forum: Demos
Topic: Small X-mas demo
Replies: 17
Views: 16493

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.
by HardWareMan
Tue Dec 25, 2007 7:41 am
Forum: Demos
Topic: Small X-mas demo
Replies: 17
Views: 16493

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...
by HardWareMan
Tue Dec 25, 2007 7:13 am
Forum: Blabla
Topic: Homemade Capacitor
Replies: 22
Views: 12667

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...
by HardWareMan
Mon Dec 24, 2007 4:54 am
Forum: Blabla
Topic: Wondermega Question
Replies: 12
Views: 6566

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...
by HardWareMan
Sun Dec 23, 2007 7:12 am
Forum: Blabla
Topic: Homemade Capacitor
Replies: 22
Views: 12667

Shiru wrote:
Chilly Willy wrote:I guess, but "fun" for me would be building a homemade processor, not a homemade cap. :lol:
Building a homemade processor entirely from homemade capacitiors - that's real fun.
You gourmet. Resistance and transistors also homemade?
by HardWareMan
Fri Dec 21, 2007 6:27 pm
Forum: Blabla
Topic: Homemade Capacitor
Replies: 22
Views: 12667

All capacitors are made of paper and foil. To reduce the size - adding electrolyte.
by HardWareMan
Sun Dec 16, 2007 5:33 pm
Forum: Megadrive/Genesis
Topic: Genesis Address Bus and Max RAM
Replies: 35
Views: 22500

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...
by HardWareMan
Sun Dec 16, 2007 1:41 pm
Forum: Megadrive/Genesis
Topic: Genesis Address Bus and Max RAM
Replies: 35
Views: 22500

Jorge Nuno wrote:WOW!! Only the # cycles elapsed between AS and DTACK remaining :D
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.
by HardWareMan
Sun Dec 16, 2007 4:58 am
Forum: Megadrive/Genesis
Topic: Genesis Address Bus and Max RAM
Replies: 35
Views: 22500

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 ...
by HardWareMan
Sat Dec 15, 2007 8:03 am
Forum: Megadrive/Genesis
Topic: Genesis Address Bus and Max RAM
Replies: 35
Views: 22500

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