On Sun, 11 Aug 2002 at 10:55:20, wrote: (ref: <[EMAIL PROTECTED]>)
>In a message dated 11/08/02 15:37:49 GMT Daylight Time, >[EMAIL PROTECTED] writes: > > > It was me collecting different build-standards of the QL. Here's a > link to a > web-page > summarizing my collection: > http://mypage.bluewin.ch/QLvsJaguar/QLBuild-Standards_PCB-Issues.html > > > > Issue 2 is not known to me to exist, so please give me more infos. > It would > be great > > >It may not be issue 2 - it is very hard to read the writing on the PCB >if not impossible!! Issue number is in copper under the UHF modulator as well as on the top in ink by CTRL ports. >However, looking at your web-pictures, I cannot see anything similar. > >This one has had a few changes to it, which does not help - a very >early mouse interface is attached, saying Iss 1 Mouse Adapter - a small >circuit board on various leads connected to the circuit board by the >8302 and the resistors near the 8049. >It does not work at the moment (no keyboard to try it anyway!!), You can 'press' F1 easily using a joystick, or even connecting the relevant pins on the kbd connector direct. > but >when I got it, I noticed the JM ROMs were the wrong way round (JM-0000 >on the right of JM-0008). Doesn't matter. > I have swapped these for AH ROMs. >A lot of the capacitors are different from later versions (there are >plain bronze in colour) and the row of resistors to the right of >AH-0008 socket actually have some wire links in place of the resistors >JU2, JU3 and JU4. These 'resistors' were in fact zero ohms - ie wire links. That is why they had one black bar == 0. > >The only other obvious changes are that there is a heavy duty wire link >with resistors/capactors (not sure which) from pin 10 of the 8302 (on >the left hand side) to pin 20 on the right hand side of the 8302 (top >right corner) and then across to the large blue capacitor just above >the 8049 chip!!� What is 'top right corner'? (8-)# Your pin numbering sounds wrong. --\/-- pin 1-> | | <- pin 40 | | | | pin 10-> | | | | | | pin 20-> | | ------ Is that what you meant? +ve or GND on the capacitor? > Oddly, the black wire which normally trails from under >the heat sink and ends up near the keyboard membrane is missing... That was to get a better 5V to ram. If that is not there, it does sound like an early version. -- QBBS (QL fido BBS 2:252/67) +44(0)1442-828255 tony@<surname>.demon.co.uk http://www.firshman.demon.co.uk Voice: +44(0)1442-828254 Fax: +44(0)1442-828255 TF Services, 29 Longfield Road, TRING, Herts, HP23 4DG
