Search found 727 matches

by HardWareMan
Mon Dec 24, 2007 4:54 am
Forum: Blabla
Topic: Wondermega Question
Replies: 12
Views: 6397

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: 12379

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: 12379

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: 22029

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: 22029

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: 22029

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: 22029

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