Search found 681 matches

by hlide
Thu Jul 07, 2022 10:00 pm
Forum: Demoscene
Topic: Sharper by Genesis Project
Replies: 10
Views: 5306

Re: Sharper by Genesis Project

@Sdw Oh I didn't see your answer. In fact I already found out how to do so (or at least something similarly) once I understood there is only one star per line: then it is very easy to be able to draw in the full 320x200 area! FXFZna2WYAA1VVK.png A simple PUSH to draw a dot and erase the right charac...
by hlide
Tue Jul 05, 2022 8:08 pm
Forum: Demoscene
Topic: Sharper by Genesis Project
Replies: 10
Views: 5306

Re: Sharper by Genesis Project

Any technical explanation about the parallax star field? Even running on the emulator, it is quite impressive.
by hlide
Tue Jul 05, 2022 7:42 pm
Forum: Hardware
Topic: Help: Sharp MZ 700 short fuse with video connection
Replies: 13
Views: 5488

Re: Help: Sharp MZ 700 short fuse with video connection

You don't need to solder a SCART. Breadboard, resistors and Dupont wires and an Amiga SCART cable and then you can test. It doesn't need to be permanent. The issue is to discover whether your RF box is the culprit.
by hlide
Thu Jun 23, 2022 6:15 am
Forum: Hardware
Topic: Problem with MZ80-A CRT
Replies: 7
Views: 3380

Re: Problem with MZ80-A CRT

(Answers from https://www.facebook.com/groups/sharp8bitmz/permalink/3196131587370272) I would check around the horizontal drive for a dodgy gnd connection, a faulty resistor/capacitor filter combo or the ic itself. It looks like it may be on the linearity side This is the spec sheet for the ic and h...
by hlide
Thu Jun 09, 2022 4:52 pm
Forum: Hardware
Topic: MZ-80a US Power Supply
Replies: 4
Views: 2544

Re: MZ-80a US Power Supply

Ah sorry!!!! I thought about MZ-700 so yeah you may need 5V and 12V. And I wonder whether -5V may also be needed. But anyway, there are Meanwell PSUs which can provide those different voltages.
by hlide
Wed Jun 08, 2022 8:43 pm
Forum: Hardware
Topic: MZ-700 correct filter capacitors for PSU
Replies: 14
Views: 6868

Re: MZ-700 correct filter capacitors for PSU

Do not bridge the connections! Either you replace them with more modern caps like the ones in timh's last picture or you just remove the depleted ones but never ever ever connect them with conductive wires (that's what we would call a short circuit!).
by hlide
Tue Jun 07, 2022 10:49 pm
Forum: Hardware
Topic: MZ-700 correct filter capacitors for PSU
Replies: 14
Views: 6868

Re: MZ-700 correct filter capacitors for PSU

tingo wrote: Sun Apr 03, 2022 5:07 pm they are supposed to blow before the equipment gets damaged or catches fire.
Ahem, fuses are for that. Those old caps due to their "paper" conception ALWAYS blow and catch fire after a decade, not because they are used as fuses.
by hlide
Mon Jun 06, 2022 3:26 pm
Forum: Hardware
Topic: Help: Sharp MZ 700 short fuse with video connection
Replies: 13
Views: 5488

Re: Help: Sharp MZ 700 short fuse with video connection

MZ-700 is only using 5V from the PSU and it seems you checked it. RF-box is only powered with 5V as far as I know. So the issue is about the current intensity (well that's the function of a fuse). I would say if you have a multimeter, put it in intensity mode with the highest max value and check wha...
by hlide
Sun Jun 05, 2022 4:46 pm
Forum: Hardware
Topic: Help: Sharp MZ 700 short fuse with video connection
Replies: 13
Views: 5488

Re: Help: Sharp MZ 700 short fuse with video connection

For my experimental MZ-700 I used an Amiga SCART cable. Dupont wires to connect the inner RGB connector to DB23 (yes I know we should add resistors to decrease the TTL voltages). Color are too vivid but at last you can test as well.
IMG_20201129_172702.jpg
by hlide
Sun Jun 05, 2022 4:24 pm
Forum: Hardware
Topic: Help: Sharp MZ 700 short fuse with video connection
Replies: 13
Views: 5488

Re: Help: Sharp MZ 700 short fuse with video connection

Here is what I got on a MZ-800 in monochrome monitor video output:
signal-10µs-8MHz.jpg