Marcel, that Schmidt-trigger is already there. Nice little SMD bug under the socket that sits in the ROMOEH line. Apparently, it doesn't help.
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I have mixed experiences with GoldCards - One doesn't work at all, the other one (at least in one specific QL) rather well for days together with a QL-SD. But not well enough to go through the nuisance of destroyed file system every other week or so. Tobias > Am 22.01.2018 um 15:07 schrieb Marcel Kilgus via Ql-Users > <ql-users@lists.q-v-d.com>: > > pgraf--- via Ql-Users wrote: >> Remark: This new driver can not be expected to resolve the signal >> quality issue between (Super)GoldCard and QL-SD. This remains a >> hardware problem. > > One beta release ALMOST worked with my Gold Card, it could read a > directory half-way before outputting garbage. > > As I've understood your chip is 3.3V and the lines (or GND) is too > noisy so that logic level 0 could be interpreted as 1 before the lines > settle, because the chip samples them faster as older chips would, is > that about right? Would it help to put a 74-style Schmitt-trigger in > front of ROMOEH or something like that? > > Marcel > > _______________________________________________ > QL-Users Mailing List _______________________________________________ QL-Users Mailing List
