Search found 64 matches

by nico24
Mon Jan 31, 2022 11:31 pm
Forum: Other Computer / System Cores
Topic: Acorn Electron Core
Replies: 65
Views: 21447

Re: Acorn Electron Core

What part of the Electron tape wasn't working? The last core had it working just fine.
by nico24
Fri Jan 14, 2022 5:39 pm
Forum: Guides & Videos
Topic: MiSTer Core Dev Episode 5: Tilemap Graphics
Replies: 4
Views: 2761

Re: MiSTer Core Dev Episode 5: Tilemap Graphics

Hehe - thanks - it was a bit of a killer to finish this one. Unfortunately it just gets more and more complicated!! Still, all good fun.
by nico24
Fri Jan 14, 2022 5:24 pm
Forum: Guides & Videos
Topic: MiSTer Core Dev Episode 5: Tilemap Graphics
Replies: 4
Views: 2761

MiSTer Core Dev Episode 5: Tilemap Graphics

Displaying a tilemap tank graphic on the screen using logic chips and the Tank Battalion character rom chip, then explaining how it works (hopefully..)

This time it's all breadboard, but next time the Verilog code is done so the same thing can be shown from the MiSTer.

by nico24
Sun Jan 02, 2022 10:55 pm
Forum: Guides & Videos
Topic: Arcade PCB's layout design book
Replies: 16
Views: 10487

Re: Arcade PCB's layout design book

So I was hoping the actual hardcopy book had better diagrams than the hand drawn ones. I was so relieved to see that they are! On the logic analyzer ideally there'd be one that does 24 channels, because you'll see later in the videos that we need to see the address lines and the data lines at the same time. I'll use the Ben Eater method of using an...
by nico24
Sun Jan 02, 2022 8:02 pm
Forum: Guides & Videos
Topic: Arcade PCB's layout design book
Replies: 16
Views: 10487

Re: Arcade PCB's layout design book

So I bought the Andre LaMouthe book and also the course on Udemy was only $11 - it's hours and hours long, so I say it's a steal. Overall some really excellent info there. Thanks for putting me on to the book and the course.
by nico24
Sun Jan 02, 2022 3:43 pm
Forum: Guides & Videos
Topic: MiSTer Core Dev Episode 4: Colors^2
Replies: 1
Views: 2371

MiSTer Core Dev Episode 4: Colors^2

Displaying a color pattern on the screen using logic chips and then implementing the same design in Verilog on the MiSTer platform.

by nico24
Fri Dec 31, 2021 2:30 pm
Forum: Guides & Videos
Topic: MiSTer Core Dev Episode 2 : Get Your Flip-Flops
Replies: 10
Views: 7944

Re: MiSTer Core Dev Episode 2 : Get Your Flip-Flops

MysteryM10 - thanks. Yes - we'll have Episode 4 coming in the next day or two - it's getting a video picture on the screen.
by nico24
Fri Dec 24, 2021 4:18 pm
Forum: Guides & Videos
Topic: MiSTer Core Dev Episode 3: Let This Sync In
Replies: 0
Views: 9212

MiSTer Core Dev Episode 3: Let This Sync In

Completing the timing circuit & TV sync signals of the Namco Tank Battalion arcade game, on both breadboard and in Verilog & Modelsim software.

by nico24
Fri Dec 24, 2021 3:54 pm
Forum: Guides & Videos
Topic: MiSTer Core Dev Episode 2 : Get Your Flip-Flops
Replies: 10
Views: 7944

Re: MiSTer Core Dev Episode 2 : Get Your Flip-Flops

Yes - it's from the TTL book from Texas Instruments. You can get it from this link: https://www.ti.com/lit/ug/scyd013b/scyd013b.pdf Just a quick point - the TI book has the pinout and logic 'truth table' on different pages - by the magic of video they are together, so don't go looking for a page with both on, because you won't find it! Most other d...
by nico24
Tue Dec 21, 2021 9:56 pm
Forum: Guides & Videos
Topic: Arcade PCB's layout design book
Replies: 16
Views: 10487

Re: Arcade PCB's layout design book

Mine was that and an Akai Sampler S3000, with the CD-Rom. I actually got an Akai S612 that had the same disks as the Amstrad 6128 - the 3" jobs!
by nico24
Tue Dec 21, 2021 9:39 pm
Forum: Guides & Videos
Topic: Arcade PCB's layout design book
Replies: 16
Views: 10487

Re: Arcade PCB's layout design book

It's funny - I was heavily into synths and samplers after my 8-bit computer days, probably the reason I never got into the 16-bit computers. I haven't looked much into the sound side of FPGAs, but I can see that becoming a real rabbit hole!
by nico24
Tue Dec 21, 2021 6:13 pm
Forum: Guides & Videos
Topic: Arcade PCB's layout design book
Replies: 16
Views: 10487

Re: Arcade PCB's layout design book

Thanks for the feedback!

I've just bought that book too, since it looks really really good. Can't wait to get it.

Great website too. Thanks.
by nico24
Tue Dec 21, 2021 3:29 pm
Forum: Guides & Videos
Topic: Arcade PCB's layout design book
Replies: 16
Views: 10487

Re: Arcade PCB's layout design book

Alkadian,

This book looks amazing. Thanks for the link - I had no idea this existed!!
You probably know about my video series on MiSTer core development. But if you don't, check out episode 1 that has a resources section. A good book in there about arcade design - it is a bit old though.

https://youtu.be/qxgM9NPrhqw
by nico24
Tue Dec 21, 2021 2:35 pm
Forum: Guides & Videos
Topic: MiSTer Core Dev Episode 2 : Get Your Flip-Flops
Replies: 10
Views: 7944

Re: MiSTer Core Dev Episode 2 : Get Your Flip-Flops

Xbytez - I'm honored that you'd be posting my videos to this site. Thank you!! I was going to do it myself by I see you've been me to it. If there are any questions about the content please fire away. The EP2 was actually getting to be close to an hour so I've split it into 2 parts. The now EP3 will be coming out pretty soon too, since it's almost ...
by nico24
Thu Nov 25, 2021 6:49 pm
Forum: Development for MiSTer
Topic: Controller issue with core development
Replies: 5
Views: 3536

Re: Controller issue with core development

I'll give it a go. I didn't now you could have it ready for acquisition if you didn't use the Program Device route!
Thanks.
by nico24
Thu Nov 25, 2021 6:47 pm
Forum: Development for MiSTer
Topic: Arlet 6502 Core
Replies: 3
Views: 4274

Re: Arlet 6502 Core

I'm going to do an upcoming video about how to get over this with the 6502 core.
by nico24
Thu Nov 25, 2021 5:42 pm
Forum: Development for MiSTer
Topic: Controller issue with core development
Replies: 5
Views: 3536

Re: Controller issue with core development

Thanks - I'll setup the code in a github. At the moment I'm just fudging the MiSTer shell to allow the pass-through of the comp sync and RGB signals, so it's only working on my CRT. The strange thing is that if I change the order of the up and right control inputs it works. I really don't see how that would affect anything. I can use Signal Tap to ...
by nico24
Wed Nov 24, 2021 5:02 pm
Forum: Development for MiSTer
Topic: Controller issue with core development
Replies: 5
Views: 3536

Controller issue with core development

Hi, I wonder if anyone has had a similar issue. I've put together a simple arcade core - I'm going to start publishing the step in videos coming up - anyway I'm putting the controller inputs into my core as so (Verilog): .BUTTONS(~{m_coin, m_start, m_bomb, m_fire, m_right, m_left, m_down, m_up}), This is the standard setup for the controls as far a...
by nico24
Wed Nov 24, 2021 4:58 pm
Forum: Development for MiSTer
Topic: Arlet 6502 Core
Replies: 3
Views: 4274

Re: Arlet 6502 Core

The answer by the way, is no, it's not.
by nico24
Mon Jun 28, 2021 1:41 pm
Forum: Development for MiSTer
Topic: Arlet 6502 Core
Replies: 3
Views: 4274

Arlet 6502 Core

Is it possible to use the low PHI clock cycle for RAM access with the Arlet 6502 core - as in a real 6502 chip? Most cores (maybe all) I have seen just split the VRAM circuitry from the operation of the 6502 core, but I'd be interested to know if you can indeed mimic actual hardware ram/rom timing or it's not actually possible.

Thanks,
Nick
by nico24
Sun May 09, 2021 2:12 pm
Forum: Arcade Cores
Topic: Komani´s Hyper sports
Replies: 19
Views: 5331

Re: Komani´s Hyper sports

Great news in the works it sounds then!

Interesting that FGPA Arcade already has some of these Konami titles - shame it's not open like MiSTer. Oh well, in time we'll have them.
by nico24
Sun Mar 21, 2021 1:28 pm
Forum: ZX Spectrum, ZX81, SAM Coupé, TSConf, QL, Next
Topic: ZX Spectrum Next Port to MiSTer
Replies: 108
Views: 39796

Re: ZX Spectrum Next Initial Port to MiSTer

Thanks - but can't see the EDIT key on there.
by nico24
Sat Mar 20, 2021 7:42 pm
Forum: ZX Spectrum, ZX81, SAM Coupé, TSConf, QL, Next
Topic: ZX Spectrum Next Port to MiSTer
Replies: 108
Views: 39796

Re: ZX Spectrum Next Initial Port to MiSTer

Anybody know how to get the special keys to work - like EDIT or Graph key etc.?
by nico24
Wed Nov 25, 2020 9:36 pm
Forum: Development for MiSTer
Topic: Ram / Rom Timing Question
Replies: 3
Views: 1840

Re: Ram / Rom Timing Question

Thanks Paul.
by nico24
Wed Nov 25, 2020 1:12 am
Forum: Development for MiSTer
Topic: Ram / Rom Timing Question
Replies: 3
Views: 1840

Ram / Rom Timing Question

I put together an actual 65C02 chip with 32kb of Ram and 32kb of Rom. In the ROM I placed a few bytes of test code: At FFFC 00, FFFD 80 - the reset vector to point to address 8000 to start the code I won't bore with the code but essentially load 42 into the accumulator, and then load address 2000 and write the number 42 to address 2000. It then doe...
by nico24
Sat Oct 10, 2020 5:14 pm
Forum: Arcade Cores
Topic: Pacman Custom Chip/Board Schematics
Replies: 1
Views: 1280

Re: Pacman Custom Chip/Board Schematics

Turns out IT'S IN THE PAC MAN MANUAL!!!!!

Very happy to see that indeeeeeed!!!
by nico24
Sat Oct 10, 2020 4:04 pm
Forum: Arcade Cores
Topic: Pacman Custom Chip/Board Schematics
Replies: 1
Views: 1280

Pacman Custom Chip/Board Schematics

Does anyone know if the custom chips have available schematics anywhere on the internet? There are two custom chips: VRAM Addresser Sync Controller They have daughterboard equivalents with, I think typical TTL chips. However can't find any info. I know it is possible to just bypass all those chips, if you re-write the code in a non-schematic way. I...
by nico24
Sun Jul 19, 2020 8:27 pm
Forum: Other Computer / System Cores
Topic: Rememotech MTX ported to MiSTer by retrovader [Yo_Me]
Replies: 48
Views: 18607

Re: Rememotech MTX ported to MiSTer by retrovader [Yo_Me]

So I worked out if you type MTXL and then switch the display mode, you are in basic.
by nico24
Sun Jul 19, 2020 1:16 pm
Forum: Other Computer / System Cores
Topic: Rememotech MTX ported to MiSTer by retrovader [Yo_Me]
Replies: 48
Views: 18607

Re: Rememotech MTX ported to MiSTer by retrovader [Yo_Me]

Is it possible to get into BASIC? Any ideas how this might be done?

Thanks!
by nico24
Tue Jun 16, 2020 6:52 pm
Forum: Arcade Cores
Topic: Crazy Balloon
Replies: 6
Views: 4712

Re: Crazy Balloon

This is some of the most clearly written code I've seen for an arcade core. I will really be able to understand what is going on, for a change. Thanks.