[Request] Real machine test

8bitwizard · Post by **8bitwizard** » Tue Jan 27, 2009 11:42 pm

TmEE co.(TM) wrote:CLR, BTST and some other instructions cannot be used with VDP

That is correct. CLR is a read/modify/write instruction just like AND and OR, even though it ignores the read value.

I learned this years ago when working on a boot rom for a 68000 system that used parity RAM. This was in the initial memory clear loop, and it basically crashed with a bus error right away because it tried to read the uninitialized RAM.

Jorge Nuno · Post by **Jorge Nuno** » Wed Jan 28, 2009 2:32 am

Umm, I've got rid of almost all CLRs in my prog, only a few left, but none to the VDP. And now the prog jumps over the RAM checker.

Please test it again

ScroGer · Post by **ScroGer** » Wed Jan 28, 2009 7:04 am

OMG IM BUSTING A FUCKING NUT AS WE SPEAK, THIS IS SOOOOOOOOOOOOOOOOOOOOOOOOOOO DAMN COOL

TmEE co.(TM) · Post by **TmEE co.(TM)** » Wed Jan 28, 2009 5:16 pm

Holy kaka

Shiru · Post by **Shiru** » Wed Jan 28, 2009 5:25 pm

TmEE, not all people uses resolution >2048, so please, scale down your photos (use thumbnails or something).

Jorge Nuno · Post by **Jorge Nuno** » Wed Jan 28, 2009 5:37 pm

WHAT!

LOOL is that the real thing? Did you alter anything?

TmEE co.(TM) · Post by **TmEE co.(TM)** » Wed Jan 28, 2009 5:51 pm

That is from my MD2, and I used the latest greatest ROM, and did not do any changes to it...

Do you initialize all variables ? RAM is full of garbage on startup on real HW.... that caused me a lot of headache when I made Glass Breaker MD.

Shiru wrote:TmEE, not all people uses resolution >2048, so please, scale down your photos (use thumbnails or something).

Sorry for that, I was in a hurry...

Jorge Nuno · Post by **Jorge Nuno** » Wed Jan 28, 2009 5:56 pm

It should "detect" zero RAM now becuase I jump over it...

Does the color animates?
Seems some kind of garbage in plane A.

Press B

HardWareMan · Post by **HardWareMan** » Thu Jan 29, 2009 3:37 am

Once, I've got same thing. I forgot to erase all 64K of VRAM and when I used PlaneA with priority bit (I though this is enought) I've still got garbage. And not on transparent color. Here is proof pics:

Jorge Nuno · Post by **Jorge Nuno** » Thu Jan 29, 2009 3:39 am

At last it runs (acheivement unlocked

) ! Well sort of... I'll try to fix that tomorrow..

TmEE co.(TM) · Post by **TmEE co.(TM)** » Thu Jan 29, 2009 6:34 am

I must notice that I need a lot of hard and soft resets to get it sort of running... sometimes the system boots up with VDP outputting wrong sync or something, freaky...

Jorge Nuno · Post by **Jorge Nuno** » Thu Jan 29, 2009 9:29 pm

Done and reupped. I hope it looks ok...

Re-enabled RAM capacity checker.

ScroGer · Post by **ScroGer** » Mon Feb 02, 2009 5:31 pm

so whats the point???????

TmEE co.(TM) · Post by **TmEE co.(TM)** » Mon Feb 02, 2009 5:49 pm

to do things you cannot do in BEX

I need to check the ROM....

Jorge Nuno · Post by **Jorge Nuno** » Mon Feb 02, 2009 9:24 pm

TmEE co.(TM) wrote:to do things you cannot do in BEX

I need to check the ROM....

Don't forget to press B (assuming it works), and doing random moves to $C0001E or something...