Search found 1096 matches

by dp11
Mon May 25, 2020 2:33 pm
Forum: 8-bit acorn hardware
Topic: BBC master fault any thoughts welcome
Replies: 12
Views: 308

Re: BBC master fault any thoughts welcome

My First guess would the battery. What do you know about the battery? Try disconnecting the battery and resetting the CMOS does it remember the setting across a CTRL break ?
by dp11
Sun May 24, 2020 12:52 pm
Forum: 32-bit acorn software: other
Topic: Is software for 32bit Acorn hardware dead?
Replies: 13
Views: 590

Re: Is software for 32bit Acorn hardware dead?

No Software isn't dead. just most 32bit people live : https://www.riscosopen.org/content/
by dp11
Fri May 22, 2020 11:19 am
Forum: programming
Topic: Equb equw equd etc
Replies: 24
Views: 1212

Re: Equb equw equd etc

You can post a link to Google drive or something similar.
by dp11
Thu May 21, 2020 11:28 pm
Forum: programming
Topic: Equb equw equd etc
Replies: 24
Views: 1212

Re: Equb equw equd etc

can you post the full code ?
by dp11
Thu May 21, 2020 11:03 pm
Forum: programming
Topic: Equb equw equd etc
Replies: 24
Views: 1212

Re: Equb equw equd etc

because .sl is already defined somewhere else ?
by dp11
Wed May 20, 2020 8:56 am
Forum: programming
Topic: Autobahn in Ample
Replies: 8
Views: 204

Re: Autobahn in Ample

Pi1MHz emulates the M5000 and either plays via the Pis headphone jack or the beebs internal speaker.
by dp11
Sun May 10, 2020 8:42 pm
Forum: 8-bit acorn hardware
Topic: Pi1MHz future supported devices
Replies: 15
Views: 554

Re: Pi1MHz future supported devices

I think Prisma 3 might be possible , there are a few step required before this is possible. I'm working on these steps in the background. I will need help !

Teletext how do people imagine this working ? A preset number of pages on the SDcard ( e.g. 1000 pages is only 1Mbyte SDCARDs are big !)
by dp11
Sat May 09, 2020 10:54 pm
Forum: 8-bit acorn hardware
Topic: Pi1MHz future supported devices
Replies: 15
Views: 554

Pi1MHz future supported devices

This is just for me to gain ideas of what people might like. I have a few things in the pipeline. This does not represent a promise of might come or what might be possible.
by dp11
Thu May 07, 2020 8:44 pm
Forum: 8-bit acorn hardware
Topic: Sideways RAM expansion
Replies: 28
Views: 728

Re: Sideways RAM expansion

Are if you are using the same area of RAM as the MUSIC5000 it might start making a noise.
by dp11
Thu May 07, 2020 7:03 pm
Forum: 8-bit acorn hardware
Topic: Sideways RAM expansion
Replies: 28
Views: 728

Re: Sideways RAM expansion

I can't obviously see why the RAM disk would be cleared on BREAK.
The noise might just be because there is more activity on the 1MHz bus.
by dp11
Mon May 04, 2020 11:19 pm
Forum: 8-bit acorn hardware
Topic: XC9500XL phaseout
Replies: 26
Views: 888

Re: XC9500XL phaseout

Just looking at Xilinx latest quarterly report says the core products account for 30% of revenue . core products are classed as : Virtex-6, Spartan-6, Virtex‐5, CoolRunner‐II, Virtex-4, Virtex-II, Spartan-3, Spartan-2, XC9500 products, configuration solutions, software & support/services. Advanced p...
by dp11
Mon May 04, 2020 2:31 pm
Forum: 8-bit acorn hardware
Topic: Raspberry Pi to 1MHz bus interface
Replies: 144
Views: 11494

Re: Raspberry Pi to 1MHz bus interface

The click is the Music5000 emulation starting . The next release should support disabling various emulations. For now set M5000_BeebAudio_Off=1 in cmdline.txt
by dp11
Mon May 04, 2020 2:29 pm
Forum: 8-bit acorn hardware
Topic: BeebSCSI 7_7
Replies: 229
Views: 11122

Re: BeebSCSI 7_7

I'm more than happy to try and debug the issue. I need an image with all the software needed to reproduce it and step by step instructions .
by dp11
Sun May 03, 2020 2:37 pm
Forum: 8-bit acorn hardware
Topic: BeebSCSI 7_7
Replies: 229
Views: 11122

Re: BeebSCSI 7_7

They may be more than one problem that have similar effect.
by dp11
Sun May 03, 2020 2:18 pm
Forum: 8-bit acorn hardware
Topic: BeebSCSI 7_7
Replies: 229
Views: 11122

Re: BeebSCSI 7_7

Debug alters the timing, it is possibly that without DEBUG enabled the code is returning too quickly for the x86.
by dp11
Sun May 03, 2020 2:06 pm
Forum: 8-bit acorn hardware
Topic: BeebSCSI 7_7
Replies: 229
Views: 11122

Re: BeebSCSI 7_7

Yep Pi can be powered from USB. Offer still stands if you can get my an image that causes the issue. Ideally on a plain Master.
by dp11
Sun May 03, 2020 1:56 pm
Forum: 8-bit acorn hardware
Topic: BeebSCSI 7_7
Replies: 229
Views: 11122

Re: BeebSCSI 7_7

The Pi won't boot from exFAT. so you need FAT32 card.
by dp11
Sun May 03, 2020 11:20 am
Forum: 8-bit acorn software: other
Topic: Music5000 B-em optimisation
Replies: 12
Views: 499

Re: Music5000 B-em optimisation

I understand about quick hacks. Some of the comments are not fully accurate. The real DAC is 12 bits + sign bit. The antilog log table is has 13 bits to maintain an extra bit of accuracy which doesn't really exist. So really with have 17 bits the extra bit is really noise. I'm happy the really hardw...
by dp11
Sun May 03, 2020 10:02 am
Forum: 8-bit acorn emulators
Topic: B-Em
Replies: 466
Views: 40690

Re: B-Em

Thanks very much for this work I'm sure others will find it useful.
by dp11
Sun May 03, 2020 10:00 am
Forum: 8-bit acorn hardware
Topic: BeebSCSI 7_7
Replies: 229
Views: 11122

Re: BeebSCSI 7_7

Can you by some magic e.g. "DD" create a copy that I can play with and have a test case I can run on a standard master ?

Whist it may be a hardware issue. I would suggest its more likely to be a software issue given it starts up correctly.
by dp11
Sat May 02, 2020 11:23 pm
Forum: 8-bit acorn hardware
Topic: BeebSCSI 7_7
Replies: 229
Views: 11122

Re: BeebSCSI 7_7

from your log you appear to be trigger the too large error : // Check that the LUN file size is actually a size which ADFS can support (the number of sectors is limited to a 21 bit number) // i.e. a maximum of 0x1FFFFF or 2,097,151 (* 256 bytes per sector = 512Mb = 536,870,656 bytes) if (lunFileSize...
by dp11
Sat May 02, 2020 10:45 pm
Forum: 8-bit acorn software: other
Topic: Music5000 B-em optimisation
Replies: 12
Views: 499

Re: Music5000 B-em optimisation

I've spotted some more performance if people are interested. When you record from Music 5000 it ends up calling fwrite for every sample. If the functions are re jigged a bit then fwrite could be called once per buffer which is sent to the audio system. The wave file appears to be defined to use 24bi...
by dp11
Sat May 02, 2020 10:31 pm
Forum: 8-bit acorn hardware
Topic: BeebSCSI 7_7
Replies: 229
Views: 11122

Re: BeebSCSI 7_7

I wonder if you have a Power issue. e.g the +5v rail is drooping or there is a resistive connection some where.
by dp11
Sat May 02, 2020 3:52 pm
Forum: 8-bit acorn emulators
Topic: B-Em
Replies: 466
Views: 40690

Re: B-Em

Another step forward. >makebem.bat make: `b-em.res' is up to date. gcc -std=gnu99 -O3 -Wall -DBEM -DVERSION=\"\" -DINCLUDE_DEBUGGER -DUSE_MEMORY_POINTER -I C:\MinGW\include -I C:\Linux\allegro\include -I C:\Linux\allegro5 -c 6502.c In file included from C:\Linux\allegro\include/allegro5/base.h:50:0,...
by dp11
Sat May 02, 2020 3:26 pm
Forum: 8-bit acorn emulators
Topic: B-Em
Replies: 466
Views: 40690

Re: B-Em

I think somehow the include paths is broken as nothing appears to refer to allegro5 at that level.
by dp11
Sat May 02, 2020 3:11 pm
Forum: 8-bit acorn emulators
Topic: B-Em
Replies: 466
Views: 40690

Re: B-Em

Okay Thanks for that, where do I put the unziped files so all the paths work ?
by dp11
Sat May 02, 2020 1:44 pm
Forum: 8-bit acorn emulators
Topic: B-Em
Replies: 466
Views: 40690

Re: B-Em

good point.

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