Search found 797 matches

by dominicbeesley
Thu Jul 18, 2019 4:09 pm
Forum: programming
Topic: BBC BASIC integer range
Replies: 1
Views: 118

Re: BBC BASIC integer range

A good point that i often forget. Thanks for posting this
by dominicbeesley
Thu Jul 18, 2019 9:11 am
Forum: software: other
Topic: cc65 C Cross Compiler
Replies: 35
Views: 3715

Re: cc65 C Cross Compiler

Glad you got it working
by dominicbeesley
Thu Jul 18, 2019 8:52 am
Forum: software: other
Topic: cc65 C Cross Compiler
Replies: 35
Views: 3715

Re: cc65 C Cross Compiler

Merging is on my round tuits pile but so is a lot of other stuff. It's not finished enough to go mainline and so world require constant updating
by dominicbeesley
Wed Jul 17, 2019 11:52 am
Forum: software: other
Topic: cc65 C Cross Compiler
Replies: 35
Views: 3715

Re: cc65 C Cross Compiler

Did you build the whole of cc65 from the root, the make system doesn't really work until the whole tree has been built and the lib files are to work with the cc65 compiler so there's no real concept of a windows version. What compiler set are you using? it looks to be trying to use windows paths. I'...
by dominicbeesley
Mon Jul 15, 2019 8:55 am
Forum: software: other
Topic: uknown osword handler in service rom
Replies: 16
Views: 474

Re: uknown osword handler in service rom

Thanks JGH, that's where I'd got to on OBYTE/WORD - good call on FA/FB too! Where did you get the information for the tube document from did you reverse engineer it or was there an official Acorn document. I've never found one, I spent some time looking when looking at making a block/network-friendl...
by dominicbeesley
Sun Jul 14, 2019 11:17 pm
Forum: hardware
Topic: ATOM EEPROM
Replies: 15
Views: 390

Re: ATOM EEPROM

It's a valid enough thing to do - it's what I do with some of my boards as the stand off headers are expensive and delicate! I'd say these could have been cracked all along and making a press contact and a knock has opened them up. We'll never know what caused it but it had been shaken about a fair ...
by dominicbeesley
Sun Jul 14, 2019 11:14 pm
Forum: hardware
Topic: Atom colours
Replies: 3
Views: 200

Re: Atom colours

I wonder what is going on? The colours I'm getting when I set css to 1 are much like the ones here: https://forums.bannister.org/ubbthreads.php?ubb=showflat&Number=64986&PHPSESSID=3c74d06c904029be10e5bfea6062aeab I found this thread and I can't make out what I'm doing differently! I tried inverting ...
by dominicbeesley
Sun Jul 14, 2019 4:36 pm
Forum: hardware
Topic: Atom colours
Replies: 3
Views: 200

Atom colours

Do these colours look roughly right: With ?#B002=0 - light green on dark green - goldy/pissy/yellow on black - dark green on light green - browny red With ?#B002=8 gold on red/brown sky blue on black red/brown on gold orange on black I got the test pattern by setting FORI=0TO512:?(#8000+I)=I:NEXT I ...
by dominicbeesley
Sun Jul 14, 2019 4:13 pm
Forum: software: other
Topic: uknown osword handler in service rom
Replies: 16
Views: 474

Re: uknown osword handler in service rom

Thanks for the answers Ooo, dangerous. What would happen if that interupt happened in the middle of an OSBYTE/OSWORD call? EF/F0/F1 would be whipped away under its feet. While the OSBYTE/OSWORD dispatcher disables interupts, picture what would happen if a call called something that enabled interupts...
by dominicbeesley
Sun Jul 14, 2019 12:37 pm
Forum: hardware
Topic: ATOM EEPROM
Replies: 15
Views: 390

Re: ATOM EEPROM

I got the desolder station out and took the header off. As can be seen the top pin showed the same symptom. Unforunately my desolder gun has got the pin wedged some I'm having to strip that down! I've soldered another turned pin socket on that side - I didn't bother with the other side as it seems o...
by dominicbeesley
Sun Jul 14, 2019 12:01 pm
Forum: hardware
Topic: ATOM EEPROM
Replies: 15
Views: 390

Re: ATOM EEPROM

Hi Roland,

Here's a picture. Looks like a turned pin socket on the bottom with male to male header to make a stand-off. A perfectly good solution except for the cracked pin.

D
by dominicbeesley
Sun Jul 14, 2019 11:59 am
Forum: software: other
Topic: uknown osword handler in service rom
Replies: 16
Views: 474

Re: uknown osword handler in service rom

Thanks this will save a bit of space for me in some of my code!

D
by dominicbeesley
Sun Jul 14, 2019 7:43 am
Forum: software: other
Topic: uknown osword handler in service rom
Replies: 16
Views: 474

Re: uknown osword handler in service rom

So has anyone else seen examples of testing v after a call to osbyte? Is it a valid way to test for the presence of a rom?
by dominicbeesley
Sat Jul 13, 2019 8:19 am
Forum: hardware
Topic: ATOM EEPROM
Replies: 15
Views: 390

Re: ATOM EEPROM

I've not had a chance to desolder it yet but thsts what i suspect. The turned pin socket has been cut in half before soldering but as you say they're usually tough. I did get some good coloured turned pin headers a couple of years ago which were incredibly fragile and easy to bend but didn't stand b...
by dominicbeesley
Sat Jul 13, 2019 12:37 am
Forum: hardware
Topic: ATOM EEPROM
Replies: 15
Views: 390

Re: ATOM EEPROM

Thanks Dave, you were close - it was a knackered socket but not one of the 40 year old ones! It was the turned pin socket soldered on the bottom of the yarrb, a single pin - pin39 was broken internally - when I reflowed the joint the pin part came out with the soldering iron tip. It must have either...
by dominicbeesley
Fri Jul 12, 2019 1:00 pm
Forum: hardware
Topic: ATOM EEPROM
Replies: 15
Views: 390

Re: ATOM EEPROM

Thanks for all the pointers everyone. Good shout Dave but unfortunately that's not done it! Thanks for the chip pointers - the picture I'd taken was my first attempt at installing 2114's but I'd not completed the job when I realised my EEPROM wouldn't fit! I'm now more convinced that it is the 8255,...
by dominicbeesley
Thu Jul 11, 2019 3:14 pm
Forum: hardware
Topic: ATOM EEPROM
Replies: 15
Views: 390

ATOM EEPROM

Hello, I'm trying to get an Atom I bought from Roland back to working order after it died in transit. The symptoms are that it gets as far as the boot banner and the ">" prompt appears but the keyboard is unresponsive. It looks to be in a tight loop scanning the keyboard as the 8255's nCS line is be...
by dominicbeesley
Thu Jul 11, 2019 9:59 am
Forum: hardware
Topic: 1MHz bus and JIM interoperability
Replies: 65
Views: 1887

Re: 1MHz bus and JIM interoperability

RAMFS sounds promising!

Maybe time to get a meanwell psu! I fabricated one for my main test beeb and it hasn't let me down even with all my projects hanging off it!

D
by dominicbeesley
Wed Jul 10, 2019 9:49 am
Forum: software: other
Topic: uknown osword handler in service rom
Replies: 16
Views: 474

Re: uknown osword handler in service rom

Thanks JGH for the help so far A couple more questions/clarifications on this: 1) V flag and OSBYTE/WORD - looking at the handler it seems that the V flag is set on exit for an unrecognised OSBYTE/WORD but this is neither documented in the AUG or on MDFS.net however it does seem to be used in applic...
by dominicbeesley
Wed Jul 10, 2019 7:30 am
Forum: hardware
Topic: 1MHz bus and JIM interoperability
Replies: 65
Views: 1887

Re: 1MHz bus and JIM interoperability

Hi Simon, I've made the quick tweak though I'm now not convinced this will do it* https://github.com/dominicbeesley/DataCentre/blob/master/RamFS/RAMFS200.bin?raw=true D *I need to have a look at the Ample code to see what it is actually doing while a tune is playing. I suspect it is blindly writing ...
by dominicbeesley
Tue Jul 09, 2019 4:24 pm
Forum: hardware
Topic: 1MHz bus and JIM interoperability
Replies: 65
Views: 1887

Re: 1MHz bus and JIM interoperability

Sounds good, I'll have a go at the quick fix tonight. If you PM me your address I can post an EEPROM for testing!

D
by dominicbeesley
Tue Jul 09, 2019 9:05 am
Forum: hardware
Topic: 1MHz bus and JIM interoperability
Replies: 65
Views: 1887

Re: 1MHz bus and JIM interoperability

JGH, I can confirm it is arse-ways on! Simon, I think I may have spotted a possible source of the problems in RAMFS, if an error occurs in any RAMFS handled command or service call that causes a BRK then the jim device select is left "undefined"...what that translates into is if you issue a filing s...
by dominicbeesley
Mon Jul 08, 2019 10:25 am
Forum: software: other
Topic: uknown osword handler in service rom
Replies: 16
Views: 474

Re: uknown osword handler in service rom

Thanks that all makes sense and seems to work for me though I've only got this working in a sketchy way. However, you are safe to enable interupts during your code, as interupts aren't allowed to mess with &EF/F0/F1 as they are foreground workspace. If interupts are going to call OSBYTE or OSWORD, t...
by dominicbeesley
Mon Jul 08, 2019 12:47 am
Forum: hardware
Topic: 1MHz bus and JIM interoperability
Replies: 65
Views: 1887

Re: 1MHz bus and JIM interoperability

Thanks Simon, I'll try and get some time to work through all that this week. But there is still something amiss as a couple of times tonight I've gone to catalogue a RamFS drive and it has been blank where previously I had imported all 4 drives with disk images. When the above happens are you doing ...
by dominicbeesley
Mon Jul 08, 2019 12:47 am
Forum: hardware
Topic: 1MHz bus and JIM interoperability
Replies: 65
Views: 1887

Re: 1MHz bus and JIM interoperability

Thanks Simon, I'll try and get some time to work through all that this week. But there is still something amiss as a couple of times tonight I've gone to catalogue a RamFS drive and it has been blank where previously I had imported all 4 drives with disk images. When the above happens are you doing ...
by dominicbeesley
Fri Jul 05, 2019 11:56 pm
Forum: software: other
Topic: uknown osword handler in service rom
Replies: 16
Views: 474

Re: uknown osword handler in service rom

Thanks for all this... I'll try and get a read through it all tomorrow.

D
by dominicbeesley
Fri Jul 05, 2019 11:49 pm
Forum: software: other
Topic: cc65 on the Beeb ...
Replies: 12
Views: 361

Re: cc65 on the Beeb ...

I did some work on an "OsLib" like interface to allow calling OSxxx from C and trap any errors and return them nicely. I can dig it all out if you're interested. You may be re-inventing the wheel: http://mdfs.net/System/C/ Unless my memory is going and this is exactly what we discussed X number of ...
by dominicbeesley
Fri Jul 05, 2019 5:46 pm
Forum: software: other
Topic: uknown osword handler in service rom
Replies: 16
Views: 474

uknown osword handler in service rom

Hello, I'm writing a hardware support ROM and I'd like to add a few OSBYTE/WORDs. Some of the operations I'm doing may take a long time so I'd like to re-enable interrupts in my code. I'd be grateful if anyone could give feedback on my assumptions: - interrupts are disabled when service call 8 is pa...
by dominicbeesley
Fri Jul 05, 2019 5:32 pm
Forum: software: other
Topic: cc65 on the Beeb ...
Replies: 12
Views: 361

Re: cc65 on the Beeb ...

I've been working a bit more on cc65 (well bodging it to get some other testing done), I'd be interested in sharing / updating the cc65 at some point, I have several versions on the go which I need to spend time in merging and getting up on the latest mainline version (I did most of the stuff around...
by dominicbeesley
Wed Jul 03, 2019 6:11 pm
Forum: hardware
Topic: 1MHz bus and JIM interoperability
Replies: 65
Views: 1887

Re: 1MHz bus and JIM interoperability

#-o that's kind of what I was thinking when I started this project but at least with this "standard" more than one jim peripheral can work at once!

D