Magic3 & DVD game Freezing solved !

**vdavide** · 01-01-2003,02:29 PM

Hallo to all you.
Thanks to RCE for his explanation of the code i've fixed problem
of dvd game freezing.
This is due to a spike on IO_EJECT pin (ra1 of sx28) that make chip to restart patching.
To fix it in hardware simply solder a 100nF capacitor beetwen
GND & Z (ra1) pins on the chip. Also solder a 1mF capacitor beetwen GND & Vcc on the chip.
If you try this , please post your result.

vdavide

**cjack** · 01-01-2003,02:35 PM

Hi Vdavide!! Game freezing problem remains if I don't connect z point?

**grumman** · 01-01-2003,07:38 PM

cjack,
are you saying you've disconnected Z and the games still freeze?? If you are, it may be because a floating input on an IC can easily float to logic1 (or 0), which could give the same Reset pulse. (assuming a reset is a logic 1 of course). I'll give it a try myself with a switched capacitor from RA1(Z) and GND.

**vdavide** · 01-02-2003,03:51 AM

OK RCE , J' ve tested your code with double check IO_EJECT , but moved the lines at end of last XCDVDMAN and works fine.
I will post your code modified asap.
Note : Z point is regularly connected to the chip and PS2.
Bye.

**Snoopy007** · 01-02-2003,03:52 AM

Originally posted by vdavide
Hallo to all you.
Thanks to RCE for his explanation of the code i've fixed problem
of dvd game freezing.
This is due to a spike on IO_EJECT pin (ra1 of sx28) that make chip to restart patching.
To fix it in hardware simply solder a 100nF capacitor beetwen
GND & Z (ra1) pins on the chip. Also solder a 1mF capacitor beetwen GND & Vcc on the chip.
If you try this , please post your result.

vdavide

Thanks for the info

max232 · 01-02-2003,11:44 AM

Just tested the 787 fixed with a v4 (030) Pal.

Define.inc set to....

PS2_BIOS EQU BIOS_V4; v4(chip 030)

Assembled ok.

Black Screen on boot up, disk drive seemed to be going through it's normal routine though.

Define.inc set to....

PS2_BIOS EQU 0xFF; All PS2s used for 1 to 1 code

Error assembling the hex, see log attachment below. Does anyone else get this or have I messed up somewhere??

Regards
max232

**Snoopy007** · 01-02-2003,11:14 PM

does this method work? ie the adding of a cap.

**unknown_g** · 01-03-2003,01:47 AM

i just added the switch to the magic3 to turn it off after booting

**ODD** · 01-03-2003,07:35 PM

Can u please make a tutorial for a switch?
thanks!

and is the fix working? dont wanna try it if it will not work!

petros047 · 01-04-2003,08:41 AM

If I programm and attach pic12c508 on sx28 I solved the problem of dvd freezing?
Have anybody test that method?
Have anybody programm sx28 with diferend code other than previous standar and if yes for what reason and how it works
Please help I am new and I see many opinion in this forum so i am confused.
Finaly if I atach the two capacitors one between gnd and vcc and one between z and gnd it work?And what problem I solved with this method

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