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Forum Index : Microcontroller and PC projects : picozx
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stanleyella Guru  Joined: 25/06/2022 Location: United KingdomPosts: 2129 |
anyone seen these? https://www.youtube.com/watch?v=ilOYLAkxxOQ&t=251s |
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| mclout999 Guru Joined: 05/07/2020 Location: United StatesPosts: 469 |
https://www.youtube.com/watch?v=ilOYLAkxxOQ&t=251s If you use the web link icon, you must paste it twice to make a clickable link for some reason. |
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homa Guru Joined: 05/11/2021 Location: GermanyPosts: 351 |
wow, the c64 is great! |
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| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 2129 |
Please, where is it? is it add hyperlink? the point was a pico spectrum and c64. with all the pico boards on the forum. one is listed on ebay, thought this interesting as in I would never bother cos I got an emulator and roms and think 80's games boring anyway. coding old games from scratch is more fun, not as easy as they look :) |
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palcal Guru Joined: 12/10/2011 Location: AustraliaPosts: 1873 |
The first one is to use text eg. "HERE" The second one is for the URL So. Picozx "It is better to be ignorant and ask a stupid question than to be plain Stupid and not ask at all" |
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| mclout999 Guru Joined: 05/07/2020 Location: United StatesPosts: 469 |
Yes, it is the Hyperlink. It is just an idiosyncrasy of this forum. When I see an unclickable link I just post a link. Oh, I did watch this the day it came out because I subscribe to the fellow. Edited 2024-02-02 07:21 by mclout999 |
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Turbo46 Guru Joined: 24/12/2017 Location: AustraliaPosts: 1611 |
The Web icon:  Click it and type a name for the link eg: "picozx" hit the <enter> key Paste in the URL. (Have it already in the clipboard) hit the <enter> key PicoZX DON'T INCLUDE THE QUOTES. Bill Keep safe. Live long and prosper. |
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| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 2129 |
ta for the gen Any way I can post a video without posting it to youtube first? |
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Grogster Admin Group  Joined: 31/12/2012 Location: New ZealandPosts: 9306 |
Not directly on the forums, as video files are too big. But you can upload your video to something like Dropbox or OneDrive etc, then copy the link to it, and post that as a normal link. Whenever anyone clicks on it, it will go away to Dropbox or OneDrive etc, and use their internal video player. No YouTube in sight.  Smoke makes things work. When the smoke gets out, it stops! |
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PeteCotton Guru Joined: 13/08/2020 Location: CanadaPosts: 368 |
What a brilliant project - and with arguably a far superior keyboard to the original ZX Spectrum.  |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 4233 |
Apparently they have a library that uses VGA in 64 color mode...  This is a realy cool device... In the VGA version (thicker) you could have a lithium polymer battery inside. Volhout Edited 2024-02-05 23:58 by Volhout PicomiteVGA PETSCII ROBOTS |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6787 |
Neat little board. Looks like it doesn't accept a switched audio jack though, which is a pity. I particularly like the ability to be able to use either the LCD or VGA on the same device. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 4233 |
Note: For faster updates of the ILI9341 SPI LCD they use a DMA. That will cost 153k memory (16 bits x 320x240). Volhout Edited 2024-02-06 00:46 by Volhout PicomiteVGA PETSCII ROBOTS |
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| robert.rozee Guru Joined: 31/12/2012 Location: New ZealandPosts: 2350 |
from the video, it looks like they use tiles - where sprites come in contact you can see when the tile edges not aligned with the sprite boundary. with the picomite, the colour limitations have always been driven by scarcity of memory. in order to wring every last drop of speed out of the RP2040 it was necessary for Peter to have a very large portion of the interpreter resident in RAM. this, combined with a commitment to keep 100k or so of RAM free for variables, has left little space in RAM for the video buffer. cheers, rob :-) |
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| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 2129 |
I haven't coded a real zx spectrum since you could buy them but remember the screen was a pain as it's drawn in 3 stages and you had to check an address to know which. The colours were attributes, character sized, like vga tiles. so only 2 colours per 8x8 char. no multicoloured sprites. crap when you remember but affordable :) stan |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6787 |
I always liked the Speccy. I had programming in BASIC on the "dead flesh" keyboard down to a fine art at one point. :) It was built down to a price that most people could afford (not just the ones with rich families) and, IMHO, they achieved a brilliant machine for the price. Considering what they had to work with, some of the gameplay is pretty extraordinary even now. I had one with an Interface 1, three microdrives and a modified VTX5000 modem running a part-time teletext-style bulletin board for a while. It had to be part-time because it was using my phone line. :) Mix-tel = Mick's telephone. :) . Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 2129 |
uncle clive got a knighthood for the speccy, not his wacky ideas. although it was bought as a gaming machine, tapes could be copied, it was a way to start coding , in basic or assembler. poke data into mem then rand user start address and here we are today still doing it, sort of :) |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6787 |
I would argue that his ideas weren't that wacky, just that in an effort to keep costs to the absolute minimum there tended to be too many corners cut. He could have made "better" products but they would have been too expensive for most people. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 2129 |
C5 ??? |
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Martin H. Guru Joined: 04/06/2022 Location: GermanyPosts: 1113 |
I took my first steps in Basic on the Commodore PET in the salesroom of the local electronics shop. The price was several months' salary, which was unaffordable for me as an apprentice. When Sinclair then launched the ZX 81, it was a device I could afford. With it and the excellent manual, I learnt to program BACIC. Later, of course, came the Spectrum and a bit of assembler. That was the time (1983/84) when people looked at you with pity and incomprehension if you said you had bought a computer That's why I like the Speccy. So Sir Clive is to blame for my career choice At the same time, my brother-in-law got a Dragon 32 and I started programming in 6809 assembler. Without any assembler, just a sheet of paper, a pencil and a mnemonic table.  However, I currently have a FAKE Spectrum in a self-printed case as home for my 1st Raspberry 1b with the bare metal emulator. But it is hardly ever used  Edited 2024-02-06 04:06 by Martin H. 'no comment |
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