Search found 62 matches
- Sat Jul 14, 2018 9:45 am
- Forum: General Discussion
- Topic: Reverse engineering the 6522 VIA chip?
- Replies: 7
- Views: 8623
Re: Reverse engineering the 6522 VIA chip?
I quite agree, but unfortunately there isn't yet a die shot of the HCS10017 that I know of. Decaping and imaging isn't something I'm able to do myself. I would quite happily switch to the HCS10017 when a die shot does become available. On the topic of reversing the HCS10017 Oric ULA chip, if someon...
Re: JOric
I suspect it should run without issue on the Huawei P8 Lite, and probably also on the Nexus 5X, hopefully also on the 2013 Nexus 7. On my phone it is running full speed. The Oneplus One is about 4 years old now, and when released used slightly older tech for the time in order to fit into a more budg...
Re: JOric
A little bit off the topic we've been recently discussing, but still relevant to JOric, I was wondering how many of you use an Android phone, and what make, model and Android OS version it is. I personally use a Oneplus One, which is still on Android 6. So a bit behind the latest, but still going st...
Re: OType
I've only been in the Oric community for a couple of months now, but already I am completely in awe of Twilighte. That OType demo is amazing. Regarding unfinished games, I'm also very much in awe of the Wurlde demo, the one where it starts outside the castle and you can walk around between the vario...
Re: JOric
There appears to be a slightly different story in the article below with regards to the BASIC ROM: https://www.theregister.co.uk/2013/01/28/the_oric_1_is_30_years_old/?page=4 to quote that article: Paul Johnson reveals that Tangerine was not merely an early licensee of Microsoft Basic, but that it a...
Re: JOric
I cannot tell about the rights, but didn't the people in Tangerine blatantly ripped off a Microsoft Basic Interpreter without actual permission? :D That's interesting. I Googled that and found a few references years ago about this. So presumably if the ROMs were made without a proper license or per...
Re: JOric
I'm not sure how much interest there would be in an Oric emulator on the Google Play store. I'm the sort of person that would download it, if it wasn't me publishing it. Other than me, its probably just all the other members of the Oric forums. Would people be happy to install it on their phones if ...
Re: JOric
Out of interest, have you considered what your plans are for Google Play? Upload with system ROMs and whichever titles are available with suitable licences and just keep your head down over the former? If you're publishing to Google Play, I think yours will be the first emulator that has to go thro...
- Sun May 06, 2018 9:47 pm
- Forum: Games
- Topic: Gamebase Oric V3.0
- Replies: 73
- Views: 107790
Re: Gamebase Oric V3.0
Hopefully people don't mind me resurrecting a topic after two years of inactivity, but I only just discovered the Gamebase. I'm not talking specifically about the Oric Gamebase, but about Gamebase in general. I'm not sure where I've been for the past 20 years. I thought I was a pretty big emulator f...
Re: JOric
That's why I care about using the actual colour ROM, because it's a knowable component, but haven't tried to deduce too much information about the internal counting structure. Although I have quite an interest in the CRT, blanking, sync, colour burst, and all that, I'm not intending to emulate thos...
Re: JOric
I've just been taking a look at my copy of The ZX Spectrum ULA book by Chris Smith and it appears the Spectrum starts its text window area when the vertical & horizontal counters are 0. So that's precedent. Maybe the VIC is unusual, and perhaps the Oric really does do it like the Spectrum.
Re: JOric
Thanks @ThomH. I actually managed to follow all of that. I must say I'm really impressed with the level of detail that you take your emulation to. I was impressed when I first read your posts many months ago back in the VIC 20 Denial forums, and have been impressed again seeing and reading what you'...
Re: JOric
Makes it obvious that the circles are squished :D I think I misunderstood what you meant by this. Do you mean that it is expected that the circles are squished? Edit: Having had a look at some photos found online of the Oric BASIC screen running on various 4:3 CRTs, and doing a few measurements and...
Re: JOric
Interesting. That circle is squished in the opposite direction than what I was expecting. If we're certain that that circle would be perfectly round on the original Oric connected to a 4:3 TV screen, then I'll adjust it until this circle is perfectly round. Screenshot_20180428-110131.png Edit: Okay,...
Re: JOric
In Clock Signal I apply a discreet lowpass filter to suppress some of the resulting aliasing; have you considered something like that? There's a bunch of maths to come up with filter coefficients, but then it's just performing an appropriately-weighted sum for each output pixel. Thanks Thom. As not...