Search found 74 matches

by ThomH
Fri Nov 24, 2017 2:02 am
Forum: Games
Topic: Blake's 7 feedback and review thread
Replies: 98
Views: 4253

Re: Blake's 7 feedback and review thread

I have only just started playing it, so can offer only the most trivial feedback: the CRCs in your disk image are incorrect. Probably for the same reason as discussed here — older copies of Floppy Builder output the incorrect values, most emulators don't check and PC-based image copying programs can...
by ThomH
Fri Nov 24, 2017 1:35 am
Forum: Emulators
Topic: Yet Another (EDIT: now also for Linux)
Replies: 46
Views: 10853

Re: Yet Another

Cool! ... and it works! :) Nice RGB and composite emulation. All my DSK images are running fine, but I found that original Blake's 7 (v1.1 - English) fails to boot, there is error after each sector was read: CRC error; terminating Maybe the problem is in the image (Chema?). The error appears to be ...
by ThomH
Thu Nov 23, 2017 10:38 pm
Forum: Emulators
Topic: Yet Another (EDIT: now also for Linux)
Replies: 46
Views: 10853

Re: Yet Another

Quick announcement: I've added a Linux target for my emulator. Screen Shot 2017-11-23 at 16.30.31.png Either clone from https://github.com/TomHarte/CLK/ or download the latest source release from https://github.com/TomHarte/CLK/releases and build. You'll need SDL 2, ZLib and OpenGL, plus a GPU that ...
by ThomH
Wed Aug 16, 2017 5:51 pm
Forum: Technical questions
Topic: Oric 1 display in North America
Replies: 11
Views: 2084

Re: Oric 1 display in North America

Were you considering doing any internal modifications? 50/60Hz is software selectable. So to start up in 60Hz mode you'd need to alter the main ROM. But you probably don't want that because if your screen can't do 50Hz then you're just going to have issues with most software. My further reading of t...
by ThomH
Wed Aug 16, 2017 3:53 pm
Forum: Emulators
Topic: Yet Another (EDIT: now also for Linux)
Replies: 46
Views: 10853

Re: Yet Another

Wandering through again. Still no direct progress on a PC port. But, several small bug fixes: previously it was possible for disks to corrupt themselves in memory in physically-impossible ways (including data mirroring), though you'd probably have needed to reformat a disk image in the emulated mach...
by ThomH
Wed May 17, 2017 2:11 pm
Forum: Emulators
Topic: Yet Another (EDIT: now also for Linux)
Replies: 46
Views: 10853

Re: Yet Another

Hi again; quick drop-in to say that the video issues that presented themselves on a Mac Pro are now resolved. I'd made an error in mapping between buffers such that I was unintentionally relying very heavily on floating point rounding going one way rather than another. So it could easily have surfac...
by ThomH
Tue Feb 21, 2017 8:09 pm
Forum: Technical questions
Topic: Does anybody have the WD1793 data sheet?
Replies: 6
Views: 2632

Re: Does anybody have the WD1793 data sheet?

Do you need a chip? I have a lot of 8877 chips used in the Cumana. They aren't directly compatible and need some different capacitors or something but if you're stuck it might be possible to substitute. Oh, no, but thanks for the offer! It was merely academic interest pursuant of emulation. Sadly I...
by ThomH
Tue Jan 31, 2017 8:26 pm
Forum: Emulators
Topic: Yet Another (EDIT: now also for Linux)
Replies: 46
Views: 10853

Re: Yet Another

Not seeing any issues with graphical glitches on my MBPro ... I feel like probably there's a piece of state I'm failing properly to initialise, or something like that. Based on trying the various emulated machines, it's seemingly processing data correctly and outputting it to the right place but pu...
by ThomH
Mon Jan 30, 2017 1:40 pm
Forum: Emulators
Topic: Yet Another (EDIT: now also for Linux)
Replies: 46
Views: 10853

Re: Yet Another

I wrote my first emulator on a laptop with something like a Pentium 133 as the main CPU so please don't complain with your highly powered computer... ;-) Good work with the latest release :) I suspect I may have had a Pentium 200 in mine but my point was more: I can't just throw on a Linux virtual ...
by ThomH
Sat Jan 28, 2017 4:20 pm
Forum: Emulators
Topic: Yet Another (EDIT: now also for Linux)
Replies: 46
Views: 10853

Re: Yet Another

I wrote my first emulator on a laptop with something like a Pentium 133 as the main CPU so please don't complain with your highly powered computer... ;-) Good work with the latest release :) I suspect I may have had a Pentium 200 in mine but my point was more: I can't just throw on a Linux virtual ...
by ThomH
Sat Jan 28, 2017 4:03 am
Forum: Emulators
Topic: Yet Another (EDIT: now also for Linux)
Replies: 46
Views: 10853

Re: Yet Another

Do you have any plan for releasing Windows and Linux versions of the emulator? I definitely want to. I just don't currently have great access to either type of system; I'm developing on a five-year old MacBook Air which means limited everything, including hard disk space. But I've attempted to keep...
by ThomH
Wed Jan 11, 2017 2:54 am
Forum: AY sound chip
Topic: "music" in Xenon meteors noise
Replies: 22
Views: 13197

Re: "music" in Xenon meteors noise

For the record, an example of my emulator's current attempt at AY playback is here and attached in lossless form — it's the opening of Barbitoric (with disk access gaps). The windowing filtering gives some very non-square wave forms such as the below, based on some real maths, so hopefully I'm alrea...
by ThomH
Sun Jan 08, 2017 2:25 am
Forum: AY sound chip
Topic: "music" in Xenon meteors noise
Replies: 22
Views: 13197

Re: "music" in Xenon meteors noise

Obviously an emulator will miss the analog part (filter & so on) that are not impossible to emulate but really time consuming to get something accurate.. Mine has a filter; it creates a wave at the chip's clock rate then performs a windowing filter to reduce it to your computer's sampling rate. But...
by ThomH
Sat Jan 07, 2017 8:16 pm
Forum: AY sound chip
Topic: "music" in Xenon meteors noise
Replies: 22
Views: 13197

Re: "music" in Xenon meteors noise

Obviously an emulator will miss the analog part (filter & so on) that are not impossible to emulate but really time consuming to get something accurate.. Mine has a filter; it creates a wave at the chip's clock rate then performs a windowing filter to reduce it to your computer's sampling rate. But...
by ThomH
Thu Jan 05, 2017 11:10 pm
Forum: AY sound chip
Topic: "music" in Xenon meteors noise
Replies: 22
Views: 13197

Re:

Perhaps a sound signature of the inventor of the AY? Some instructions not listed in the 6502 runs correctly, the engineers hide us something... In fact, it seems related to the way random number are generated. The noise generator is mainly a random function, and since on computer random is never r...