Spectrum Computing

It fits perfectly, Thank you!

Thanx for assistance!

Look here https://forum.tlienhard.com/phpBB3/view ... 106#p60106! Your IF got another brother!

TomD wrote: ↑Thu Mar 02, 2023 12:11 pm v1.4 released adding a loudness setting for the buzzer -> off, low, medium & high, previously only off & low were available

Grab at the usual place https://github.com/TomDDG/ZXPicoMD

TomD

Thank you, it works good.

Hello Tom, do you intend to develope an onboard version "QLPicoMD" to replace the MDV1_ in the QL in such a way that an SD-card could be changed through the slot in the QL case (similiar to the SD-QL)? I have seen your Oqtadrive board for the QL, but the QLPicoMD would be much cheaper and ...

I got it. Thank you fotr the new release.

TomD wrote: ↑Sun Feb 05, 2023 8:10 pm Grab at the usual place https://github.com/TomDDG/ZXPicoMD

Sorry, can't download the v1.3.

Hello Tom,
is it possible to use a second ZXPicoMD instead of a real H/W?

v1.3t looks so with 126k:

Great!

I have tried now the version 1.12t. The problem still consists, but the position of the not free sectors has changed. I checked it several times, the position of the occupied sectors stays fix. I hope you can solve the problem. On the other hand, a lost of 3-4 sectors is not really important. By the...

TomD wrote: ↑Sun Jan 08, 2023 10:30 am Yes me to, did you try the new 1.12t firmware for that test or the old v1.1?

TomD

I have used v1.1.

programming and graphics examples https://blog.funcall.org/lisp/2015/10/30/zx-spectrum-lisp/ Thanks, this helps a lot and works well. But I am still missing some guidance through the Spectrum Lisp Editor. How to redefine some words in case of mistyping or desired modifications? And the main questio...

Indeed, I have checked it. If I use the FORMAT command from the IF1, then just 124 sectors are free (see picture). In contrast, if I use the GUI for formatting, then 127 sectors are free. I expect some timing problems.

TomD wrote: ↑Fri Jan 06, 2023 9:39 pmas users have reported some issues with writing to cartridges.

What kind iof issues did they have? I never had problems with v1.1 and older.

Is her somebody who likes programming in Spectrum-LISP?

v1.1 released with TAP copy added. This new feature allows you to copy the contents of a TAP file to a blank cartridge. It works with headerless files as well as normal and also strips out the autorun from BASIC files to allow editing, which you will need to do to get the files to load properly fro...

Hello Tom,
the buzzer could be a bit loader. Is it possible to adjust it? Is the buzzer driven by a transistor? Is a scheme somewhere available?

TomD wrote: ↑Sun Dec 11, 2022 5:29 pm Do you have any thoughts?

No, not really. The name it is a bit long but it contains the essential informations. So, let us use ZXPicoMD.
By the way, Schottky diodes would save 0.4V HIGH-level from Pico to the data lines.

TomD wrote: ↑Tue Oct 04, 2022 10:07 pm Introducing the ZX PicoMD (I may come up with a better name!)

Did you already choose a better and shorter name for this device to make refering easier?

Congratulation! You did a great job! I hope to get this device soon.

Thank you for the explanation. Is writing/saving despite of the diodes possible? No pullup (10k) needed? The diodes reduce the voltage only to about 4V. Does this cause no problems? No pullup (10k) needed? If the pico-lines GPIO0/GIO1 would be high in the resting state, then the load on the data lin...

TomD wrote: ↑Fri Dec 02, 2022 10:34 pm..., once I've bug fixed the real h/w support.

Could you fix the bug meanwhile?

I mean steering a H/W turtle using the programming language LOGO for ZX Spectrum.

Is here anyone who has experience with LOGO, in particularly with steering a real Turtle by Sinclair-LOGO?

Thank you, this helps a lot. Now I can try to create my own MDR made from TAPs and ready for the Oqtadrive.