SpritesMind.Net

Tested pins [18-25, 120-127] in the same way.
[18-25] - showed noise in the lower part VBlank, below raster (I have PAL console).
[120-127] - showed noise similar to the noise of buses M68K.
Nothing reminds raster. Just VDP has dividers of master clock frequency (I have models with 17,7MHz quartz ...

To understand how the VDP works, it is necessary to see how works the main component video system - VRAM. This Dual channel DRAM, incorporating feature is that the buses of address and data has been combined. The second port of serial access is connected separately. In order to obtain meaningful ...

Nemesis wrote:Does someone have a copy of that image HardWareMan posted? Link seems to be dead.

Fixed.

I have noticed that for every 32 raster pixels happening consistent with the reading of each Plan A/B and Sprites on 4x speed. Then, its shift inside VDP at normal pixel speed.
Sorry but i don't understand what you are trying to say... :cry: :(
OK. I will record live video to show you how it does ...

I have noticed that for every 32 raster pixels happening consistent with the reading of each Plan A/B and Sprites on 4x speed. Then, its shift inside VDP at normal pixel speed.

Give me compiled PD-ROM with test and I will do some research.

TmEE co.(TM) wrote:I wish NOR memory would be so cheap as NAND memory....

Dreams... Dreams....

Jorge Nuno wrote:Can you run homebrew on your console?

Yes I can. I must check my PD-ROMs on real hardware.

Jorge Nuno wrote:Did you test any of the unconnected pins?
pin9, 14, [18-25], SPA/B, [120-127]

Not yet.

It may help:
To study signals VDP I did this: did connect on RGB, blue and red left in their seats and green connected through buffer to the signals. For example, thats "bottom dots" goes strictly by signal CLK of VDP memory. Try yourself.
Very interesting happens, when try "to watch" VDP memory ...

I didn't know about how NAND or NOR works.
http://www.byte.com/art/9606/sec8/art5.htm

NOR ( see the figure ) is the leading technology today, and Intel is the major manufacturer. It organizes the memory cells in parallel fashion, with each cell's drain connected to a bit line, and many bit ...

Awe man, last update to KMod? I had an idea for something I wanted to experiment with.

I got a Smart Media card with my Genesis games on it in BIN format (raw dumps), and I was hoping if the emulator could be made to load it directly from the card, and not copy to RAM then run.

It's an unusual ...

Will you ever made an step by step trace mode in debugger?

it's not possible with Gens since it does "execute code for X ms then execute code for HBL then...." :(
I would like to do it but...do much hard work needed :(
I don't even know how to handle step by step with these HInt and VInt :
How ...

Will you ever made an step by step trace mode in debugger?
GENs have an little bug with debug information screen: when VDP in 32 tile mode - part of debug information not showing. But you made separate window to debugger. If you made step by step debug mode and break on memory access at address (any ...

TmEE co.(TM) wrote:no MD emu I have doesn't support Address Error... and MD seems to support all 68K exceptions.

Not MD support that exceptions, but 68000 it self in MD. When I repairing one MD, 68000, it did double bus error and halts. With fully complies with the specifications.