Spectrum Computing

I have library disks 1-10, and newsletters 1-42. I know there were more library disks made, because I actually compiled them back in the day. I would be more than happy to share my files, but if someone could please provide the remaining library disks (I'm sure there were around 5 more). Thanks in a...

SAM-Coupe release 4 - https://github.com/ZXMicroJack/sam-coupe/releases/download/r4/samcoupe-r4-zxuno.zip - Drive activity LED on ZXUNO board - 2nd joystick on splitter (F1 to enable) - 2nd disk drive - POKE DVAR 2, 208 to enable - Fixes to FAT32. This will be the last for a bit - I'm diverting to w...

Unfortunately It sounded horrible with your test program azesmbog so, that is what I was using to test. I'll try not using it. The T80s is on the list of things to do, so please hold on - I'm doing a lot with clocks and timing at the moment. Development on the SAM core is ongoing.... Did the malfunc...

I'm not sure what issue you are having with the joystick, I will put in a switch so you switch them off. So far you are the only person who reported it which is why I ask you which board you are running the core on. Kindly let me know then I can investigate. The Joystick works perfectly on mine and ...

I'll put in a switch for the Joystick - which type of ZXUNO do you have? joystick works well on other boards. Is it a different dev board? If you view a SAM keyboard, the F0-F9 keys are to the right - where the numeric keypad is on a standard keyboard. Of course I can move then to the Fx keys, or pe...

New SAM coupe R2 https://github.com/ZXMicroJack/sam-coupe/releases/download/r2/samcoupe-r2-zxuno.zip Fixed items: - added 9 sector / CPM disk support - moved Ctrl-Alt-Del - fixed brightness problem found on prince of persia - fixed joystick issue - can now boot ProDOS (CP/M) Not fixed: - SAA issue i...

So I tried all the suggested SAA1099 implementations and it still sounds nasty, so I guess whatever is causing the distortion is not the SAA1099 module. With that, Ill move onto the other issues for now, and investigate separately - thanks for your help anyway.

Well, perhaps Linux users are not accepted ("Here's a car for you! It's okay, it's a bunch of spare parts. Assemble it yourself. Here's the instruction. And say thank you that these are spare parts, not iron ore!"), But I'm used to the fact that if they post the source codes , it is usual...

Commiting generated materials is unconventional, but just for you I'll do it. Thanks for the information on the modules, I have a SV to verilog converter so will try that one.

There are full sources. https://github.com/ZXMicroJack/sam-coupe https://github.com/ZXMicroJack/ctrl-module Please let me know what you think is missing.... I had only added disk access, but I'm happy to add more. What z80 core do you recommend? What SAA1099 core do you remmend? Thanks for your comm...

It has been my pleasure, and a great collaboration. Without your methodical QA, and attention to detail, I'd be still working on it! Thanks for your help in ensuring it meets the ZXUNO high standards, and all the background work you do - it's not unnoticed.

Hi all, Just wanted to announce the new SAM-Coupe core:MGT SAM Coupe https://github.com/ZXMicroJack/sam-coupe/releases/tag/r1 Comments welcome. Cheers MJ ============= Based on McLeod's SAM coupe core. Added single disk drive reading from SDcard in either FAT16 or FAT32 format in DSK format. Also a ...

Loving the idea of putting the laptop to good use, but I was thinking more of removing all the innards, and fitting a VGA to LVDS then an FPGA board inside. OR even just externalising the keyboard, mouse and video so that I have a truly portable desktop KVM.

Chris23235 wrote: ↑Tue Feb 15, 2022 2:28 pm I always found that the Pi400 cases look like they could be easily adapted.

But quite expensive, I've not found the keyboard available separately.

I should add currently running cores: ZX spectrum (Kryp core, + my own with Opus Discovery disk interface and OSD) SamCoupe (modified with the OSD from spectrum and can read and write SAM disks from a Fat32 formatted SD card) We would love to see these cores running on the ZX-Uno! If you intend to ...

Indeed I remember them - sold one not long ago. I have an Acer Aspire A110 as well, similar line. I was given them shortly after they came out when ppl realised they're not actually that useful :D. I just converted an old word processor (Canon Starwriter jet300) - removed the printer and the process...

I guess I fall into that category, and I'd enjoy tinkering with something like this. I recently got myself a soldering station, and am practicing on a DIY oscilloscope kit having not soldered since school. When I'm a bit more confident I'm hopefully going to be socketing and replacing some dodgy RA...

Something I’d love to see (and where I think there’s a genuine gap in the market) is a low cost, multi system FPGA device that’s based on the old 8-bit “system in a keyboard” design ethos, similar to the Next, BUT has the keyboard layout functionality that enables the majority of 8-bit and 16-bit c...

This sounds interesting. What kind of video output do you plan to implement? I have VGA on all of my boards, but by definition RGB is possible. I also have a monochrome composite out, though other video outs are not impossible. HDMI is just a connector and mapping of the lines to the port. Just wha...

I should add currently running cores: ZX spectrum (Kryp core, + my own with Opus Discovery disk interface and OSD) SamCoupe (modified with the OSD from spectrum and can read and write SAM disks from a Fat32 formatted SD card) CBM Pet 2001 Oric 1 / Atmos ZX81 CP/M based Z80 (this one I have connected...

Hi all, This is an attempt to do a straw poll. For 2 years now I've been porting various cores to different boards, mostly Xilinx but some Altera, even making my own ZX spectrum FPGA core, using Opus Discovery disk drive, and Multiface 1 / 128. I think I've gathered most of the issues when doing a p...

Just wondering - 8 pages of 32kb, would make 256kb - totally out for the 8mb SDRAM, but about the right ballpark for the 512kb SRAM. This has a 16 bit databus, if you are using only 8 bits of that, that would make total sense. Few of the designs for the DE1 I've seen use the SDRAM.

The board I am using has 32MB of SDRAM, so it's probably from the high bit addresses I set in main.v. `define PAGEMEM24_23 2'b11 `define PAGEMEM24_22 3'b110 These set the bit 24-23 of the address bus. With the DE1 with 8MB of SDRAM, then it should ignore the top bits. I set it to the top 8MB because...

[mention]DouglasReynholm[/mention] I always knew what FPGA was even back at uni - their usefulness was never lost on me, and we used them on some early PVR STBs in my former life. This is the first time I've been able to play with them, and is fulfilling a 25+ year ambition to do something meaningfu...

That's amazing - yes thats the menu - for some reason it's not importing the font... I shared my hex files, and the rom binaries. Place them in the data directory and ./mkcard.sh. Write this to the SD card and go. will work to get more assemblers working, out of interest, which one are you using? ht...