tag:blogger.com,1999:blog-4017745189504803687.post6313867341492897332..comments2024-02-28T07:29:15.484+10:30Comments on Making a C64/C65 compatible computer: SID audio at last, plus CPU and VIC-IV redesign catchingPaul Gardner-Stephenhttp://www.blogger.com/profile/10150903760695355706noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-4017745189504803687.post-29667905942006056262014-09-25T07:36:09.822+09:302014-09-25T07:36:09.822+09:30That's great! Thanks for the replies. Lookin...That's great! Thanks for the replies. Looking forward to seeing this completed.Kevin P. Kilburnhttps://www.blogger.com/profile/11810207445426326650noreply@blogger.comtag:blogger.com,1999:blog-4017745189504803687.post-78124381889633627902014-09-25T07:26:38.713+09:302014-09-25T07:26:38.713+09:30Hello,
I plan to have a user port, joysticks, real...Hello,<br />I plan to have a user port, joysticks, real C64/C65 keyboard interface, serial disk drive port. I have been thinking about the cartridge port, and I may support some simple cartridges, but this isn't a big priority. For video capture you have 100mbit ethernet, and for audio capture there is actually an onboard microphone, and it wouldn't be too hard to add a separate audio-in port, maybe even a digital one. Basically having a fully compatible cartridge port will make it much more complex, and in my view for relatively little gain. But of course things can change.<br /><br />Paul.Paul Gardner-Stephenhttps://www.blogger.com/profile/10150903760695355706noreply@blogger.comtag:blogger.com,1999:blog-4017745189504803687.post-67551962439260487142014-09-25T03:32:33.202+09:302014-09-25T03:32:33.202+09:30That's quite a bit of work! Any plans to imple...That's quite a bit of work! Any plans to implement the hardware external interfaces like the cart port, etc? It would be great to have a hardware machine that could handle neat peripherals like the Covox Voicemaster (sound digitizer) and ComputerEyes (image digitizer).Kevin P. Kilburnhttps://www.blogger.com/profile/11810207445426326650noreply@blogger.comtag:blogger.com,1999:blog-4017745189504803687.post-55635954698115122122014-09-25T03:17:30.662+09:302014-09-25T03:17:30.662+09:30This comment has been removed by the author.Kevin P. Kilburnhttps://www.blogger.com/profile/11810207445426326650noreply@blogger.comtag:blogger.com,1999:blog-4017745189504803687.post-85982702083111391792014-09-24T12:37:37.847+09:302014-09-24T12:37:37.847+09:30I used an existing open-source SID implementation,...I used an existing open-source SID implementation, that includes digital filters. I believe that $D418 audio works. I have also included stereo 8 bit digital audio channels. I.e., you get 3 SID channels plus $D418 + an extra 8 bit digital channel for the left and right side.<br /><br />For the VIC-IV and CPU I worked from the specifications and have implemented the official functions of these. This means that the VIC-IV will not support all the strange VIC-II and VIC-III tricks that have been discovered over time.<br /><br />Paul.Paul Gardner-Stephenhttps://www.blogger.com/profile/10150903760695355706noreply@blogger.comtag:blogger.com,1999:blog-4017745189504803687.post-19130314459943595492014-09-24T06:57:14.876+09:302014-09-24T06:57:14.876+09:30Paul,
How did you design the CPU, VIC-IV, and SID?...Paul,<br />How did you design the CPU, VIC-IV, and SID? I mean, to my knowledge there aren't schematics for the latter two are there? I've read that designing a SID is difficult because of the analogue components to it. Does your design allow for playing of digitized sounds like the original (older) SIDs? Thanks.<br />KevinKevin P. Kilburnhttps://www.blogger.com/profile/11810207445426326650noreply@blogger.comtag:blogger.com,1999:blog-4017745189504803687.post-89166003365640681152014-09-06T07:35:44.258+09:302014-09-06T07:35:44.258+09:30The C65 has only the same sprites as C64. The onl...The C65 has only the same sprites as C64. The only difference is that the sprite colour registers become 8 bit. The number of simultaneous colours and resolution remain unchanged.<br /><br />Paul.Paul Gardner-Stephenhttps://www.blogger.com/profile/10150903760695355706noreply@blogger.comtag:blogger.com,1999:blog-4017745189504803687.post-87337139216233117672014-09-05T23:40:25.875+09:302014-09-05T23:40:25.875+09:30Hi Paul,
as usual glad to see your achievements ...Hi Paul, <br /><br />as usual glad to see your achievements :)<br /><br />Does the C65 support hardware sprites ?<br /><br />If yes, how many, and with how many colours ?The Mindhttps://www.blogger.com/profile/15982535603996996554noreply@blogger.com