From: Bryan Pope (bpope_at_wordstock.com)
Date: 2003-09-30 20:50:42
And thusly email@example.com spake: > > At 18:53 30.09.2003 +0200, you wrote: > > >I bought a Datalux SV-703 cartridge expander in the hope of being able to > >use my RetroReplay/RR-Net combo together with my 512K REU, but so far > >they're not happy together. > > You might have a power problem there. The 512K REU takes quite a bit of > current, and the Retro Replay with RR-Net also takes more than 1 Watt power. > > >The expander has three ports and a switch that switches +5V (pins 2 & 3, > >which are shorted on the card edge), GAME (pin 8) and EXROM (pin 9). All > >other pins on all ports stay connected all the time. > > That's *nearly* OK, not sure how RR/REU reacts when IO1 and IO2 is > connected on both ends. Give IO2 (df00) to the REU and IO1 (de00) to the > Retro Replay, this will work. I do not have an expander like that, so > someone else will have to give it a try. > > >I use a PAL C128 with JiffyDOS if that makes any difference. > > C128 has a power problem in itself. The ground noise between far off ground > points is up to 0.7 volts (measured between corners of the board). Make > sure that the metal shield is in place, and the screw hold it on the PCB - > it's not only for shielding, but also to connect ground points in the > corners. I know some peope who have removed it, and experience problems > with the computer since then, especially with cartridges. > The C128 power supply is a bit better than the C64's (2.5A on +5V instead > of 1.5A). However, maybe not enough to supply everything you got there, > especially because your PSU is getting old, Capacitors might have dried out > and noise on the +5V line is getting higher. > > > Message was sent through the cbm-hackers mailing list > > Hope this gets back there; I'm not on that list. I'm also sending this to > Niklas Ramsberg's private eMail, but it would be nice if someone on this > list could share his experience with REU and RR. > > ciao, > -- > Jens Schönfeld Message was sent through the cbm-hackers mailing list
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