Search found 11 matches

by otis
Tue Mar 26, 2024 4:02 pm
Forum: For Sale
Topic: QubIDE, interest?
Replies: 7
Views: 340

Re: QubIDE, interest?

Hi Not for sale yet, just a topic to see if there's any interest. I know there are more modern alternatives but is there any interest in QubIDE? I have built a couple of Leons design so 832KB total RAM and thru put connector or angled one for IDE. Will have to verify if it’s possible to fit an angl...
by otis
Sun Feb 18, 2024 10:48 am
Forum: Hardware
Topic: Q68 Advance Notice
Replies: 74
Views: 51337

Re: Q68 Advance Notice

Please, also count me in.
by otis
Tue Aug 29, 2023 2:37 pm
Forum: Hardware
Topic: QSound and QPrint Interface
Replies: 185
Views: 65911

Re: QSound and QPrint Interface

Surprise, surprise! It works, at last. The problem is that the schematics on https://github.com/alvaroalea/QL_QsoundQprint_clone/ and also labels on PCB are wrong. Schematics and labels reads "27512" EPROM while the BOM states 2764. When I replaced 27512 with 2764, it started to work great.
by otis
Wed Aug 09, 2023 9:49 pm
Forum: Hardware
Topic: QSound and QPrint Interface
Replies: 185
Views: 65911

Re: QSound and QPrint Interface

some transistor have several "packaging" and the legs interchanged (I do not remember now, but something like BC107B and BC107C have same package but legs swapped) be aware of this. In any case, the circuit is correct, the use of this transistor is to hold DSMC line high when the interfac...
by otis
Wed Aug 09, 2023 8:24 pm
Forum: Hardware
Topic: QSound and QPrint Interface
Replies: 185
Views: 65911

Re: QSound and QPrint Interface

In fact, I've used https://github.com/alvaroalea/QL_QsoundQprint_clone/ In a desperation I even turned on the oscilloscope to see what's happening, without any significant luck. My observation is that the CE signal for EPROM is not changing at all. I even tried multiple IO sets (AY, 6821, EPROM, TTL...
by otis
Wed Aug 09, 2023 9:32 am
Forum: Hardware
Topic: QSound and QPrint Interface
Replies: 185
Views: 65911

Re: QSound and QPrint Interface

Hi folks,

I've put togehter this interface, but unfortunately, it does not seem to boot. I've tried multiple QLs, multiple IC sets, reprogrammed EEPROM with different ROM versions, to no luck.

Please, does have anyone some clues I could use (and not destroy the QL along the way?) :-)

Thanks.
by otis
Mon Jun 05, 2023 9:30 pm
Forum: Hardware
Topic: Q68 Order Process
Replies: 344
Views: 174864

Re: Q68 Order Process

Should one Q68 be available, I'm all in. Please :-) Thanks!
by otis
Fri May 24, 2019 11:58 am
Forum: Software & Programming
Topic: QLCOMMANDER - testers and help needed
Replies: 133
Views: 147881

Re: QLCOMMANDER - testers and help needed

Can't seem to find the answer here but: Can QLcommander be used to modify file type, like, making the file executable? It might come handy sometimes. While it's not exactly calming bedtime reading, there's an article on my blog about restoring broken executable file headers, either using the SEXEC ...
by otis
Thu May 23, 2019 4:21 pm
Forum: Software & Programming
Topic: QLCOMMANDER - testers and help needed
Replies: 133
Views: 147881

Re: QLCOMMANDER - testers and help needed

Andrew wrote:
otis wrote:Can't seem to find the answer here but: Can QLcommander be used to modify file type, like, making the file executable? It might come handy sometimes.
No, it cannot do that. Never crossed my mind do add this feature.
And you see, it would be a very useful one! :-)
by otis
Thu May 23, 2019 3:20 pm
Forum: Software & Programming
Topic: QLCOMMANDER - testers and help needed
Replies: 133
Views: 147881

Re: QLCOMMANDER - testers and help needed

Can't seem to find the answer here but: Can QLcommander be used to modify file type, like, making the file executable? It might come handy sometimes.