Search found 2703 matches

by Chema
Thu Oct 22, 2020 10:27 pm
Forum: Operating systems, utilities and other serious software
Topic: Testing custom tape routines on Emu?
Replies: 12
Views: 627

Re: Testing custom tape routines on Emu?

About the ORT conversion, I made a quick and dirty program to convert from ORT to TAP, which could then be converted to WAV with wav2tap. I have to get to my PC for the code, but it was a quick hack and I know it has bugs, but it worked for my needs back then. As soon as I can, I may post it here. F...
by Chema
Tue Oct 13, 2020 11:03 pm
Forum: BASIC programming
Topic: SEDORIC extended BASIC commands syntax samples/manual?
Replies: 18
Views: 919

Re: SEDORIC extended BASIC commands syntax samples/manual?

About Twiligthe... it was a devastating loss. I just cannot imagine all the wonders that could have come out from his talented mind if he were still here...

He will always be missed.

:(
by Chema
Tue Oct 13, 2020 10:30 am
Forum: C programming
Topic: H3 lib
Replies: 9
Views: 773

Re: H3 lib

Something similar was done in Oricium, with the difference that it was designed to draw pictures a sets of tiles (characters) not emulating a graphic mode for drawing primitives. Sprites were drawn on specific sets of characters. There were 40 lines of HIRES at the top, for the Logo/scoreboard, then...
by Chema
Mon Oct 12, 2020 10:04 pm
Forum: Operating systems, utilities and other serious software
Topic: Hello from UK! and presenting dflat system
Replies: 30
Views: 1088

Re: dflat

Dbug's suggestion is sound. It would be the best way to test, as the ROM contents would be in a file in the disk and would be loaded into overlay RAM. Exactly as the SEDORIC tool to put Oric-1 or Oric Atmos ROM in overlay RAM.

EDIT: Moved the topic from General
by Chema
Mon Oct 12, 2020 10:54 am
Forum: Operating systems, utilities and other serious software
Topic: Hello from UK! and presenting dflat system
Replies: 30
Views: 1088

Re: Hello from UK!

Indeed. Fascinating times :)
by Chema
Fri Oct 09, 2020 2:17 pm
Forum: Operating systems, utilities and other serious software
Topic: Testing custom tape routines on Emu?
Replies: 12
Views: 627

Re: Testing custom tape routines on Emu?

I am quite sure that you can use the virtual tape (was that the name?) on Oricutron. I think that is what is used when the ROM is not the 1.1, and thus is not patched to load the data immediately from a PC file. Some turbo loading routines already exist and some games use them. With Oricutron, this ...
by Chema
Fri Oct 09, 2020 2:07 pm
Forum: General Discussion
Topic: Presentación.
Replies: 9
Views: 766

Re: Presentación.

Hey Magoric! You finally decided to register here!

You'll see this is THE forum for all things Oric. Welcome!
by Chema
Thu Oct 08, 2020 9:43 am
Forum: Operating systems, utilities and other serious software
Topic: Cumana Reborn DSK support
Replies: 43
Views: 1636

Re: Cumana Reborn DSK support

Does this mean that Cumana Reborn has the Microdisc eprom instead of the Cumana's? Because IIRC they were hardware compatible... (they must be, or most games would not work!).
by Chema
Thu Oct 08, 2020 8:26 am
Forum: Operating systems, utilities and other serious software
Topic: Cumana Reborn DSK support
Replies: 43
Views: 1636

Re: Cumana Reborn DSK support

This is great iss! Thank you so much!

You caught my attention... why can't Cumana Reborn run CumanaDOS? Can a normal Microdisc run CumanaDOS or does it need something specific in the controller EPROM?
by Chema
Tue Oct 06, 2020 8:43 pm
Forum: Operating systems, utilities and other serious software
Topic: Cumana Reborn DSK support
Replies: 43
Views: 1636

Re: Cumana Reborn DSK support

Here is the info about the dsk formats: https://wiki.defence-force.org/doku.php?id=oric:hardware:dsk_disk_format Our dsk format is not that different from others, such as Amstrad edsk (http://www.cpcwiki.eu/index.php/Format:DSK_disk_image_file_format) which is supported natively by flash floppy and ...
by Chema
Tue Oct 06, 2020 3:44 pm
Forum: Operating systems, utilities and other serious software
Topic: Cumana Reborn DSK support
Replies: 43
Views: 1636

Re: Cumana Reborn DSK support

Probably the "old" format refers to one used in the early days with Euphoric. The image was just the byte content of the file, with no information of the mfm encoding. This was easy and compact, but I guess it failed to reproduce some disks, so the "new" mfm image appeared. This is then format we us...
by Chema
Mon Oct 05, 2020 9:45 pm
Forum: General Discussion
Topic: Oric Explorer v2.0 is up for adoption!!!
Replies: 33
Views: 13853

Re: Oric Explorer v2.0 is up for adoption!!!

I think there is no conversion from HFE to Oric dsk (yet). That is quite a pity, indeed. There are conversion for other similar formats, like Amstrad dsk/edsk format is supported, and it is quite similar. Maybe it could be possible to either create a conversion tool between CPC dsk and Oric dsk or t...
by Chema
Fri Oct 02, 2020 12:55 pm
Forum: 6502 assembly coding
Topic: substraction of two 8bits signed values into a signed 16 bits
Replies: 7
Views: 1084

Re: substraction of two 8bits signed values into a signed 16 bits

Ah, I'm too late to this thread, and iss has already answered perfectly :)

If you want to save 1 more byte you may change your jmp for a bvs. Be careful, though, as if there is a page crossing you will lose 1 machine cycle.