Hi try phone cellular battery (old model) the pack is 3 x 1.2v found in electronic shop Jipe ----- Original Message ----- From: "Gerald Stap" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, October 12, 2003 10:46 PM Subject: Re: [MSX] Novaxis Problems on Philips NMS8255 help wanted hw debugging
> Hi, the latest update; > > It seems to be a clockchip problem indeed. > I booted the msx/novaxis with graph-key pressed and then manually set > hostid and targetid with _hostid() and _targetid() from BASIC. This > allowed me to enter the setup menu after a reset from basic (defusr=0: > a=usr(0) => do not use the powerswitch as you'll lose the settings!). I > then enabled multiple devices and it found my zip. After another > software reboot my hd booted. Yes! > > I found a 3.6v NiCd 65mAh battery on this website: > http://www.allebatterijen.nl/pages/ItemDetails.asp?ArtCode=11033ZA65&HG=Batt erijen > voor computers, diversen.&SG=Ni-Cd computerbatterijen > But it doesn't say if it is an accu. Just a battery for CMOS. Do you > think I can use this battery in my NMS8255? (The NMS8255 needs a 3.6v > 45mAh NiCd accumulator). I've never ordered an MSX replacement accu > before ;) > > Tom Emmelot wrote: > > >Hello Gerald, > > > >You remember me? > >I believe that you put your finger on the right place, some data is saved in > >the clockchip so far I know! > >sorry if I am wrong but first get a new battery! > > > >Grtz >*< TOM >*< > > > >----- Original Message ----- > >From: "Gerald Stap" <[EMAIL PROTECTED]> > >To: <[EMAIL PROTECTED]> > >Sent: Sunday, October 12, 2003 6:35 AM > >Subject: Re: [MSX] Novaxis Problems on Philips NMS8255 help wanted hw > >debugging > > > > > > > > > >>Does anybody know what happens when the battery for the MSX > >>clockchip/sram is dead? Because that seems to be the case for my NMS8235 > >>and is most obvious difference between my NMS8235 and NMS8255. Can it be > >>possible that that is why the Novaxis won't boot my HD? > >>Any documentation on the Novaxis would help. > >> > >>Gerald Stap wrote: > >> > >> > >> > >>>Hi, > >>> > >>>After 5 years I finally decided to bring my MSX back to life. But with > >>>all the external hardware (the slotexpander, scartcables + selector > >>>for GFX9000, rs232c + external modem, novaxis scsi + harddrive and > >>>zipdrive) it barely fits on my desk. So I decided to build my NMS8255 > >>>into a miditower to save space. > >>> > >>>NB. Before I built the whole lot into my miditower, everything worked > >>>fine except for the fact that the gfx9000 and de opl4 couldn't both be > >>>entered in de gouda slotexpander due to power problems. The setup > >>>worked with the gfx9000 in slot 1 and the opl4 in the slotexpander > >>>thouigh. > >>> > >>>After I built the whole lot in an miditower a little problem arose > >>>which has been haunting me for two weeks now. > >>> > >>>The problem is that everything works except for the Novaxis. It can > >>>only find the scsi harddisk but won't boot from it. Instead it exits > >>>to BASIC. Drive A: is not readable from DOS 2.xx. And physical drive A > >>>is mapped to drive B. Also the novaxis cannot detect the zipdrive. I > >>>can not enter the setup menu. It says wait or something, and then the > >>>computer hangs. > >>> > >>>It does not matter if I use cartridge slot 1 or 2 directly or the > >>>slots in the slot expander. Other cartridges like Kingsvalley 2 or > >>>my FM-Pak work fine.In fact the whole MSX performs fine unil I attach > >>>the Novaxis. > >>> > >>>The msx-mainboard is now connected to a 150Watt PC-AT powersupply > >>>which should be sufficient. I checked all the voltages +/-12V and +5V > >>>on the AT powersupply and they seem to bee correct. This is also the > >>>case with slot 1+2 and the Gouda slotexpander even with cartridges in > >>>them. Zip-drive, diskdrive A&B and the SCSI hd now get their power > >>>directly from the AT powersupply. > >>> > >>>My first thoughts were that maybe the Novaxis SCSI interface had a > >>>defect or I had a bad SCSI chain, but when I put a dos 2.20 cart and > >>>the Novaxis in the slotecpander, and connect the slotexpander to my > >>>NMS8235 with doublesided diskdrive, using the SCSI chain in the > >>>miditower (zip + hd) the Novaxis detects both my HD and zipdrive and > >>>boots from it. Then everything seems to work ok. I can even enter the > >>>setup menu. So this rules out a faulty SCSI chain or bad termination. > >>> > >>>I even replaced the MSX main board in the miditower with another. But > >>>still I have the same problem. > >>> > >>>Specs board 1: > >>>Philips MSX2 NMS8255 board with built in dos2.20, fast diskrom 7 mhz > >>>and 512kB RAM > >>> > >>>Specs board 2: > >>>Philips MSX2 NMS8255 board with built in dos2.20, fast diskrom 7 mhz > >>>and 256kB RAM > >>> > >>>I'm very puzzled. > >>>Does anybody have any ideas on how to get the novaxis working? what > >>>are the tolerances of the novaxis? > >>> > >>>- Could it be a grounding problem? > >>>- Is it advisable to supply the slotexpander it's own +/-12V and 5V > >>>from the AT power supply instead of getting it from the MSX main board > >>>via slot 1 or 2? > >>> > >>>Any help/hints would be greatly apprciated. > >>> > >>>Gerald > >>> > >>> > >>> > >>> > >>> > >>> > >>> > >>>_______________________________________________ > >>>MSX mailing list ([EMAIL PROTECTED]) > >>>Info page: http://lists.stack.nl/mailman/listinfo/msx > >>> > >>> > >>> > >>> > >>_______________________________________________ > >>MSX mailing list ([EMAIL PROTECTED]) > >>Info page: http://lists.stack.nl/mailman/listinfo/msx > >> > >> > > > >_______________________________________________ > >MSX mailing list ([EMAIL PROTECTED]) > >Info page: http://lists.stack.nl/mailman/listinfo/msx > > > > > > > > > > > _______________________________________________ > MSX mailing list ([EMAIL PROTECTED]) > Info page: http://lists.stack.nl/mailman/listinfo/msx > _______________________________________________ MSX mailing list ([EMAIL PROTECTED]) Info page: http://lists.stack.nl/mailman/listinfo/msx
