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Indeed! Good measure results needed at first place.

Why not just use 74(LS)04 or 74(LS)14 ?
It can be placed on the keyboard PCB too and eliminate the transistor. It's worth also to try HCT IC's.
If the transistor is a "must" then I would try (so called) digital transistors.

I've quickly tested 0.2.1/0.2.3 and it works! :) (updated raxiss.com ). Spotted minor things: - image selection: are "DEL-press" and "eject button" equivalent in regard of their action? - power cycle required (no way to activate LOCI rom menu again) - to reproduce: power-on, acti...

Hm, I think you really nailed it: 83,84,85,86!

Amazing info! Now it's cristal clear. About the pattern: I think the most non-sense one is to have any combination of 3 consecutive mode-attribute bytes and the 4th is current detected mode. :D For instance let's suppose the current mode is T50 (#1A) then the pattern can be: H50,H60,T60,T50. I think...

@Sodiumlightbaby: I have a questions: :) - What is the full range of addresses that ULA uses to generate video? The memory refresh of DRAMs uses rows (i.e. during RAS all low 8-bits $xx00-$xxFF should appear successively on the '257-muxer inputs) but what range is used during CAS? - What addresses r...

Just a note: LOCI runs CP/M for Oric too!
I have made lot fixes and updates in the Oric sources but didn't committed the changes yet.

btw, IMHO it's time to open new thread for common discussions, wishes and dreams not directly related to the main development and testing ...

1. Oric peripherals initialization : as rule all peripheral chips (VIAs, PIAs, etc.) with bi-directional ports after power-on/reset are set as INPUTs. AY doesn't make exception, so don't forget to take care for it too - the result is not working keyboard: lda #$07 ; set i/o port on 8912 to output ld...

Symoon wrote: ↑Fri Nov 15, 2024 10:53 pm Anyway I know how to fix this one now, thanks

For Retrocomputer Shack cable check also if the ground wire (the shielding) is not broken.
Missing or bad ground can be the reason for such "unsynchronized" picture.

@Symoon: Indeed, the SYNC connection is broken!
See the picture with pin numbers and description.
You need just to connect the SYNC wire to pin 20 - soldering recommended
but crimping with pliers should do the job too.

Oricutron can be build with both 1.x and 2.x SDL versions. I'm using Makefile based build. For SDL 1.x (SDL 1.2.15 is the last version and it's forever): make PLATFORM=win32-gcc SDL_LIB=sdl for SDL 2.x: make PLATFORM=win32-gcc SDL_LIB=sdl2 (for 64 bit target change 32->64). You can check the 'msvc' ...

Xeron wrote: ↑Thu Nov 07, 2024 8:40 pm

ThomH wrote: ↑Thu Nov 07, 2024 5:40 pm I had not realised that you were you!

Ahh, OK, yes it's me. I remember the very first time it booted to the BASIC prompt was on the train to work, for example

So, Oricutron, Clock Signal, emul8D - three emulators for Oric, not bad ...

Nice interview, congrats @Dbug!

My French is below zero but I really understood every slide in your powerpoint presentation (you posted it on X the other day) - and this is without any my effort to learn French, just playing with Oric games and software.

Sodiumlightbaby wrote: ↑Mon Nov 04, 2024 4:31 pm... paradoxically the fixed ULA vmode snooping may be too good ... during VBLANK

bit offtopic: Indeed, the snooping is too good!
If we make the mode byte to be accessible through the LOCI-API we can do VSYNC hack for free

Can do but it's not all loci's that are having an issue. so it's a bit hit and miss. Yeah just tested mine and it works with my V1.0 ROM fitted @ Vyper68 : Read the whole discussion HERE for details about different UV-EPROM's and mask programmed (i.e. factory) PROM's. There is proper way to use any...