
Apple ][+ Core
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Re: Apple ][+ Core
Thanks for the 15Kkz support
(not tried it yet). I had just downloaded loads of games in .nib after reading about Scott Adams adventures games in Retro Gamer mag.

Re: Apple ][+ Core
Yeah, but I'm not sure the Saturn RAM extension and the RAM in the 'e' is the same, e.g. Tetris 128k also doesn't start, but 48k does.Newsdee wrote:The Apple IIe was an extension of the 2+ that came with 128KB of RAM, 80 columns, and extemded character set (with international support with some country-specific ROMs).
I believe most games just need the extra memory which is already availavle in the core.
Re: Apple ][+ Core
Hi.
I managed a quick play with the Core. Here are some observations:
1.On 15kHz CRT TV picture is good, but is off to the left the same amount as original PC Engine Core. As the computer does not fill the whole screen you don't miss information like on the PC Engine but it would be nice if centering could be improved.
2. Is the memory being cleared properly with a Reset? I saw the title screen in the corrupted graphics on another time screen of a game I loaded.
3. The Apple ii originally had a strange joystick. Is this correctly translated in the Core? I was using a USB digital game pad. Apple joystick info -https://hackaday.com/2016/08/03/an-appl ... -gameplay/
Thanks
I managed a quick play with the Core. Here are some observations:
1.On 15kHz CRT TV picture is good, but is off to the left the same amount as original PC Engine Core. As the computer does not fill the whole screen you don't miss information like on the PC Engine but it would be nice if centering could be improved.
2. Is the memory being cleared properly with a Reset? I saw the title screen in the corrupted graphics on another time screen of a game I loaded.
3. The Apple ii originally had a strange joystick. Is this correctly translated in the Core? I was using a USB digital game pad. Apple joystick info -https://hackaday.com/2016/08/03/an-appl ... -gameplay/
Thanks
Re: Apple ][+ Core
All the games I have are converted .nib games by me. Where have you found converted games?Higgy wrote:Thanks for the 15Kkz support(not tried it yet). I had just downloaded loads of games in .nib after reading about Scott Adams adventures games in Retro Gamer mag.

Just a computer and videogame lover
- Atari Jr 2600 clone
- Atari 7800 Peritel
- Atari XEGS
- Atari Lynx II
- Atari Jaguar
- MiST Board

- Atari Jr 2600 clone
- Atari 7800 Peritel
- Atari XEGS
- Atari Lynx II
- Atari Jaguar
- MiST Board
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- Captain Atari
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Re: Apple ][+ Core
The TOSEC Set includes 74 MB of .nib games.vebxenon wrote:All the games I have are converted .nib games by me. Where have you found converted games?Higgy wrote:Thanks for the 15Kkz support(not tried it yet). I had just downloaded loads of games in .nib after reading about Scott Adams adventures games in Retro Gamer mag.
Re: Apple ][+ Core
Which TOSEC Set? The most recent one I can find (2017-04-23) only has 15.3MB.Chris23235 wrote:The TOSEC Set includes 74 MB of .nib games.vebxenon wrote:All the games I have are converted .nib games by me. Where have you found converted games?Higgy wrote:Thanks for the 15Kkz support(not tried it yet). I had just downloaded loads of games in .nib after reading about Scott Adams adventures games in Retro Gamer mag.
Re: Apple ][+ Core
I suck at creating TV signalsHiggy wrote:Hi.
I managed a quick play with the Core. Here are some observations:
1.On 15kHz CRT TV picture is good, but is off to the left the same amount as original PC Engine Core. As the computer does not fill the whole screen you
don't miss information like on the PC Engine but it would be nice if centering could be improved.

Reset doesn't clear the memory at all, but there's a cold reset option in the OSD.2. Is the memory being cleared properly with a Reset? I saw the title screen in the corrupted graphics on another time screen of a game I loaded.
The analog joystick port is not implemented.3. The Apple ii originally had a strange joystick. Is this correctly translated in the Core? I was using a USB digital game pad. Apple joystick info -https://hackaday.com/2016/08/03/an-appl ... -gameplay/
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- Captain Atari
- Posts: 241
- Joined: Thu Aug 07, 2014 6:52 pm
Re: Apple ][+ Core
You are right, it's the dsk archive that is over 70 MB, the .nib archive is much smaller, it's contains of 171 images.Lane wrote:Which TOSEC Set? The most recent one I can find (2017-04-23) only has 15.3MB.Chris23235 wrote:The TOSEC Set includes 74 MB of .nib games.vebxenon wrote:
All the games I have are converted .nib games by me. Where have you found converted games?
Re: Apple ][+ Core
and dsk can be converted in nib ?
ok, found the dsk2nib.exe in MiST repository
ok, found the dsk2nib.exe in MiST repository
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- Captain Atari
- Posts: 241
- Joined: Thu Aug 07, 2014 6:52 pm
Re: Apple ][+ Core
Just wanted to post the same, here is the link:DanyPPC wrote:and dsk can be converted in nib ?
ok, found the dsk2nib.exe in MiST repository
https://github.com/mist-devel/mist-boar ... ls/dsk2nib
It works fine, dsk2nib is no problem, nib2dsk can be a problem, because the nib format can contain copy protected images.
Re: Apple ][+ Core
The TOSEC also has other formats '.do' for example that can be converted to .nib
Slingshot - I was mainly using 'Cold Reset' but I did use 'MiST Reset' a few times. But I think I used the 'MiST Reset' after I saw the previous games graphics as I thought 'MiST Reset' was better(?!). Thanks
Slingshot - I was mainly using 'Cold Reset' but I did use 'MiST Reset' a few times. But I think I used the 'MiST Reset' after I saw the previous games graphics as I thought 'MiST Reset' was better(?!). Thanks
Re: Apple ][+ Core
How do you rename the default folder for the Apple 2 Core ?
And, sorry for the Out Topic, Atari ST core one ?
And, sorry for the Out Topic, Atari ST core one ?
Re: Apple ][+ Core
The .dsk extension is probably more common. It would be nice if the core could load them directly, but converting via the dsk2nib utility is not too bad as long as you don't have a huge archive.
Re: Apple ][+ Core
Dump the .dsk files into a folder with the converter and use something like at command line:
Dsk2nib *.dsk *.nib
Batch converts the entire lot in seconds.
Dsk2nib *.dsk *.nib
Batch converts the entire lot in seconds.
Re: Apple ][+ Core
Here are my screenshots, I think compatibility and overall picture quality is fine, image is shifted to the left a bit...slingshot wrote:I suck at creating TV signalsHiggy wrote:Hi.
I managed a quick play with the Core. Here are some observations:
1.On 15kHz CRT TV picture is good, but is off to the left the same amount as original PC Engine Core. As the computer does not fill the whole screen you
don't miss information like on the PC Engine but it would be nice if centering could be improved.![]()
Slingshot, Thank you again for improving this core!
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Re: Apple ][+ Core
But no one know how do rename the default disks folder for the Apple 2 Core ?
I named it "appleii", "apple-ii", "apple_ii" but when I load a nib file the system reports me to the root of the sdcard.
Here is my actual folders names, but apple2 and atarist are the wrong ones:
I named it "appleii", "apple-ii", "apple_ii" but when I load a nib file the system reports me to the root of the sdcard.
Here is my actual folders names, but apple2 and atarist are the wrong ones:
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Re: Apple ][+ Core
I think the MiST firmware doesn't like the + in the core's name. Will remove it next time.
Re: Apple ][+ Core
The emulator has all wrong colors now... What is orange is blue, and what is green is purple, and vice-versa, etc.
Even in the pictures posted above, all the colors are backwards, like 90 or 180 degrees out of phase. The ground is supposed to be purple (I know, stupid as that is, but that is how the game was released).
Try to test a different game like Pac-Man or RUN COLOR DEMO and you will see...
Even in the pictures posted above, all the colors are backwards, like 90 or 180 degrees out of phase. The ground is supposed to be purple (I know, stupid as that is, but that is how the game was released).
Try to test a different game like Pac-Man or RUN COLOR DEMO and you will see...
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Re: Apple ][+ Core
I didn't notice that, as never owned the original hardware... But loaded the previous core, released in september by MasterOfGizmo, and ground is purple... Made 2 screenshots to show the difference (this older core does not support interlaced mode). So I can confirm the colors are different ... nice catch!rittwage wrote:The emulator has all wrong colors now... What is orange is blue, and what is green is purple, and vice-versa, etc.
Even in the pictures posted above, all the colors are backwards, like 90 or 180 degrees out of phase. The ground is supposed to be purple (I know, stupid as that is, but that is how the game was released).
Try to test a different game like Pac-Man or RUN COLOR DEMO and you will see...
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Re: Apple ][+ Core
Yeah, I didn't found it wrong also, as I'm not really knowing this machine (too). Will take a look at the issue (and still planning to do some IIe memory paging implemented).rittwage wrote:The emulator has all wrong colors now...
Re: Apple ][+ Core
Looks like the color output is just shifted. Here is a good coverage about how it works: https://www.xtof.info/blog/?p=768
Re: Apple ][+ Core
Technically, if you output the signal with the right original timings, you do not have to emulate the artifact colors. At 15Khz on an original RGB monitor, it should work just like the original Apple II.
Re: Apple ][+ Core
I don't think so. Atari 8-bit artifacts (NTSC artifacts, to be more precise) disappear on RGB. And Apple II artifacts seem to be (about) the same according to the link posted by Newsdee.rittwage wrote:Technically, if you output the signal with the right original timings, you do not have to emulate the artifact colors. At 15Khz on an original RGB monitor, it should work just like the original Apple II.
Artifacts are produces because the color carrier, even not modulated as on Video Composite, is too coarse to encode video pulses at high resolution. So quick pulses on the signal might be decoded and demodulated as a fake color.
If you remove the carrier, as it happens even on Svideo that has a separate chroma signal, and there are no artifacts anymore. Let alone, obviously, on RGB.
Fx Cast: Atari St cycle accurate fpga core
Re: Apple ][+ Core
Ah, you are right... it only works in composite. I was thinking the GS does it, but it's emulated in hardware I suppose.ijor wrote:I don't think so. Atari 8-bit artifacts (NTSC artifacts, to be more precise) disappear on RGB. And Apple II artifacts seem to be (about) the same according to the link posted by Newsdee.rittwage wrote:Technically, if you output the signal with the right original timings, you do not have to emulate the artifact colors. At 15Khz on an original RGB monitor, it should work just like the original Apple II.
Artifacts are produces because the color carrier, even not modulated as on Video Composite, is too coarse to encode video pulses at high resolution. So quick pulses on the signal might be decoded and demodulated as a fake color.
If you remove the carrier, as it happens even on Svideo that has a separate chroma signal, and there are no artifacts anymore. Let alone, obviously, on RGB.
Re: Apple ][+ Core
As NTSC is not in the RGB color space, a conversion is needed anyway. However it was not hard to fix. Also did some improvement towards IIe support, the result:
I wonder if a Apple II+ model would need to be preserved, since I've learned the //E model was the most common and successful, and mostly compatible with the +.
Upd: I was wrong some days ago, the joystick was implemented, just a bug prevented it to work. Now it's OK (at least works for me).
Attached the core (it's a work in progress, no double hi-res, so some games are displayed wrongly, even POP title screen, no lower letters).I wonder if a Apple II+ model would need to be preserved, since I've learned the //E model was the most common and successful, and mostly compatible with the +.
Upd: I was wrong some days ago, the joystick was implemented, just a bug prevented it to work. Now it's OK (at least works for me).
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