Contact — 8bitworkshop documentation #86
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Replies: 16 comments 19 replies
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Hiya. I'm enjoying working my way through 'Designing Video Game Hardware in Verilog'. I'm up to the test pattern generator. (I haven't learnt a lot yet since I've done some Verilogging in the past, and I've got a TinyFPGA AX1 that I programmed to output various VGA test patterns.) Looking at the output in the 'oscilloscope' section of the IDE, vsync seems to be the signal I'd expect ANDed with hsync. I can't figure out why. The Verilog source looks OK to me. IDE bug? |
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Glad you are enjoying the book, did you figure out the FPGA issue? |
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Hi. The books are great! I really appreciate all the work you have done on the website as well. I have a question I hope you can help me with. When I try to compile hello.c - NES platform, I get the following for the _pal and other functions: "Error unresolved external '_pal_col'". I'm including all of the files from the 8bit site, so I don't know what I'm doing wrong. Any help would be appreciated. Thanks, JD. |
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The example at: https://github.com/nesdoug/01_Hello contains all the necessary configuration files to compile and link (locally) a hello world program for NES. Problem solved. Thanks to Doug! |
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Hi, this project is really great. Currently I am using this to test assembly code for the SEGA computer SC-3000, since your IDE supports SG-1000. I am the founder of the www.sc-3000.com survivors website, and I am noticing that the interest in the early consoles by SEGA is growing constantly. I would like to have a full support for the SC-3000 computer in your IDE: memory map, PPI and keyboard. It would be cool also to suport the tape port also :) Do you think it could be possible? Thanks. I could give you help and support. |
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I don't think it would be hard as libCV already supports the SC-3000 (I think?) and there's no BIOS to worry about. It would be just adding a new subclass of the SG1000. Any existing JavaScript emulators for the SC-3000? |
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Hello, thank you for your answer. Currently I made my personal Javascript emulator of the SEGA SC-3000/SG-1000. I have published it here: www.play-sc-3000.com, it's minified but if you need it I can give the source to you. |
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Hey Steven! I just realized how the Asset Editor comment tags work, but they're not listed out in the documentation yet. Do you have the list of tags and what the values correspond to for palettes, graphics, or...??? |
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Not yet. They are very ... esoteric :-/ Probably the best method is to search the code for examples, they usually start with "{w:" or "{pal:" |
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Hi! Great Web IDE for nes development! |
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Hello ! I've ordered one of your books, and i'm trying to develop a game for the NES. It's a great tool ! :) |
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Ok, i've finally found it. It is the [*µ] key. Do you plan to make books about the C64 and the CPC6128 ? |
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Looking for partners to drill down into Atari Tempest vector coin op Contact: |
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which version of MAME works with the ROMs created from the VIC Dual? I converted my .bin to a .zip and I can't get it to work with MAME. Thanks, Brian |
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Hi Brian, for MAME you have to split up the .bin file into multiple files corresponding to the ROMs on the board. This link has a Python script: https://github.com/sehugg/8bit-tools/tree/master/vicdual Here is the memory map derived from the MAME sources: http://www.arcaderestoration.com/memorymap/1283/Carnival.aspx I think it should work with a recent version of MAME, but I haven't tested in awhile. It should tell you which roms are missing though. |
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I did run the script, I got the zip file. but it's not working |
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My zip (that I created with the script) contains the same 19 files, same size as the working Carnival.zip file that I downloaded that IS working in MAME. |
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I found a problem: recent versions of MAME (e.g. 0.261) have slightly different ROM files for Carnival. You can grab the updated script in the 8bit-tools repo. Works for me now, hope it works for you! Thanks for bringing it to my attention. |
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Thanks Steven, I'll try this and let you know how it works. I've been working on a project since retiring, check it out here: https://www.youtube.com/playlist?list=PL6-0_fdvQrFPnfEJKpHxi6NPIADmreNdC I've bought all of your books, and now I'm creating my "Invader Demo" for all the Arcade platforms in your book (I've finished the first two so far - VIC Dual and Midway 8080) When I make videos for these versions, I'll show/promote your books, looking forward to the NES, Atari VCS and maybe even Verilog version. I have created an Atari version in Batari BASIC but I'm going to write it in 6502 assembly if it kills me. ;) Great work, thanks for making this available, Brian |
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I'm getting these errors now when I run the script: *** No data for epr-412.u5 (offset 0x4040) |
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That's ok, those are PROMs that control color mapping and such. They have to be in the ZIP but the script will leave them alone. Looks like you're doing some cool stuff and having fun, good luck! |
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Thank you, The script isn't creating the .zip file, it's failing with that being the error, I'm sure it's me, I'm pretty green. just in case you want to check here's my .bin file
Brian
On Tuesday, January 9, 2024 at 12:26:41 PM EST, Steven Hugg ***@***.***> wrote:
That's ok, those are PROMs that control color mapping and such. They have to be in the ZIP but the script will leave them alone.
Looks like you're doing some cool stuff and having fun, good luck!
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I get the same error, so it's not you. There just isn't data for those ROMs and they are zeroed out, but the emulator doesn't require them. I'm surprised that the zip file isn't created though. Maybe it is written to your home directory or somewhere else? Are you on Windows? |
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The .zip file was being created, I just had to check the time stamp. I got the whole process to work with the graphic test file, so at least I know how to do it, but when I convert my own file the emulator runs but I just get a black screen.
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On Tue, Jan 9, 2024 at 4:04 PM, Steven ***@***.***> wrote:
I get the same error, so it's not you. There just isn't data for those ROMs and they are zeroed out, but the emulator doesn't require them. I'm surprised that the zip file isn't created though. Maybe it is written to your home directory or somewhere else? Are you on Windows?
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Quick note: my Bluetooth gamepad works on all the first 3 Arcade emulator but not the Atari Color Vector (Z80), I'm not sure if that's intentional or not. |
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Also Williams doesn't work with a gamepad. |
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COIN1 is not working on Atari Color Vector (Z80) |
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The Apple II emulator does standard system rom ? |
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No, it's an alternate ROM, but you can upload a custom ROM with the filename "apple2.rom" |
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are you the same Stephen Hugg that made comet busters? that was the first game i ever played |
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Yep! I'm glad you had fond memories of it! |
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Hello, I am looking for a book to teach game programming in C under DOS / VGA. Do you have a recommendation, or would you be interested in providing such a book yourself? |
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I don't know of such a book except those out of print. Here is a thread I found: https://www.dosgameclub.com/forums/topic/book-suggestions/ The challenge is building the dev environment -- I assume you'd use DOSBox for emulation, and DJGPP or OpenWatcom for C compiler. There may be some VSCode plugins but I haven't tried any. Good luck! |
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well, the dev environment would be 8bitworkshop obviously! it has Dos and a C compiler. |
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so i have been experimenting with the x86/FreeDOS implementation in the IDE. there is an example provided for C programming, snakegame. It contains some routines for querying the keyboard. that is helpful. what i am looking to do next, is to set the screenmode to VGA Mode X, load a BMP file, and blit (parts of) the image to the screen memory. also i am trying to write pixels and manipulate the palette. i was wondering if you could perhaps provide examples for this? I am no good in Assembler unfortunately. i know how to do these things under Turbo C using graphics.h, but in the absence of that I am pretty lost. any help appreciated |
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Contact — 8bitworkshop documentation
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https://8bitworkshop.com/docs/contact.html
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