Search found 1846 matches

by sydney
Fri Sep 22, 2017 4:49 am
Forum: hardware
Topic: NuLA demos
Replies: 116
Views: 3319

Re: NuLA demos

You don't actually need to change any code in a game to get it to work. All you do is program the palette before loading the game and the colours will be changed. Rob supplies a few sample palettes to get us started.
The hard part will be deciding what to change the colours to.
by sydney
Wed Sep 20, 2017 9:14 pm
Forum: software: other
Topic: Are there versions of BBC Basic with extensions (like procedures)
Replies: 10
Views: 299

Re: Are there versions of BBC Basic with extensions (like procedures)

BBC BASIC has had procedures and functions since 1981.
by sydney
Wed Sep 20, 2017 2:54 pm
Forum: hardware
Topic: NuLA demos
Replies: 116
Views: 3319

Re: NuLA demos

Looks like I'll be using MMFS on my beeb from now on then as I don't want to attempt removing the video ula from my master. Just to be clear, the incompatibility isn't with the VideoNuLA board but with the demo :) Yes. The demo uses compression to fit more pictures on the disk as a 200k disk / 20k ...
by sydney
Wed Sep 20, 2017 2:37 pm
Forum: hardware
Topic: NuLA demos
Replies: 116
Views: 3319

Re: NuLA demos

Cheers Dave.
Looks like I'll be using MMFS on my beeb from now on then as I don't want to attempt removing the video ula from my master.
by sydney
Wed Sep 20, 2017 6:47 am
Forum: hardware
Topic: NuLA demos
Replies: 116
Views: 3319

Re: NuLA demos

Do you actually need any NuLA hardware (or software) present to see this issue? If not, I can take a quick look at this with ICE-T65. Dave Since the problem is purely with disc access then NuLA hardware isn't needed. I've not tested with mmfs, only smartspi and beebem under wine on Linux doesn't se...
by sydney
Wed Sep 20, 2017 5:36 am
Forum: hardware
Topic: NuLA demos
Replies: 116
Views: 3319

Re: NuLA demos

I'm running the windows version of beebem under wine on linux so this may be causing a problem. I have windows 10 on another laptop but don't use it much so I'll need to install beebem on that to eliminate linux as the problem - I'll probably find it easier to test on real hardware! Again it won't b...
by sydney
Tue Sep 19, 2017 10:17 pm
Forum: hardware
Topic: NuLA demos
Replies: 116
Views: 3319

Re: NuLA demos

Hi Simon.
Just a quick test on beebem and the nula logo is displayed then after the delay I get:

Code: Select all

File not found

Bad program


Not able to test on real hardware until Thursday afternoon.
by sydney
Tue Sep 19, 2017 7:51 pm
Forum: hardware
Topic: NuLA demos
Replies: 116
Views: 3319

Re: NuLA demos

Interesting findings sydney, thanks for looking into this... Simon, the code I've posted is almost unrecogisable as the code you posted. I've stripped out all of the SWR, shadow and disksys code. It really is the bare bones so I'm pretty sure the fault lies in the filing system implementation - or ...
by sydney
Tue Sep 19, 2017 7:48 pm
Forum: hardware
Topic: NuLA demos
Replies: 116
Views: 3319

Re: NuLA demos

The error I found was that I was loading the file twice - once using osfile and once using oscli load a.01. Both work and fail in the same way! Made no difference to the main problem. My initial thought when starting this was that osfile was the problem, which was why I moved to oscli, but I'm no ne...
by sydney
Tue Sep 19, 2017 7:39 pm
Forum: hardware
Topic: NuLA demos
Replies: 116
Views: 3319

Re: NuLA demos

Thanks for putting so much effort into looking at this. Might the SPI OSFIND be overwriting the filename block? What happens if the filename is completely reset to "A.01" rather than just resetting the "01" bit? The data is stored like this at the end of the program: .file_name ...
by sydney
Tue Sep 19, 2017 7:16 pm
Forum: hardware
Topic: NuLA demos
Replies: 116
Views: 3319

Re: NuLA demos

I'm a bit stumped. I've stripped the code posted on github by Simon down to what I think is the bare minimum and what I'm left with works on beebem using the standard Acorn DFS but not with smartspi. I've narrowed it down to this piece of code: .load_file ; check if the next file exists ldx #LO(file...
by sydney
Tue Sep 19, 2017 2:03 pm
Forum: hardware
Topic: NuLA demos
Replies: 116
Views: 3319

Re: NuLA demos

Hmm. Seems I'd already tested whether osfind worked and it does: INCLUDE "macros.asm" INCLUDE "acornconstants.asm" ORG $2000 .start MODE 7 ;find file ldx #LO(file_name) ldy #HI(file_name) lda #&40 ; a=&40 = open file for read jsr &ffce ; osfind bne file_exists lda #7 ...
by sydney
Tue Sep 19, 2017 1:55 pm
Forum: hardware
Topic: NuLA demos
Replies: 116
Views: 3319

Re: NuLA demos

Ok. I've been looking at the code and the program seems to freeze at the following point (though I could well be wrong!): ldx #LO(file_name) ldy #HI(file_name) lda #&40 ; a=&40 = open file for read jsr &ffce ; osfind bne file_exists Does anyone know if osfind is supported on mmc systems ...
by sydney
Tue Sep 19, 2017 7:14 am
Forum: hardware
Topic: NuLA demos
Replies: 116
Views: 3319

Re: NuLA demos

I might have a little spare time this morning so will have a look and see how much work it'll be to work with smartspi and other sdcard systems.
by sydney
Sun Sep 17, 2017 4:34 pm
Forum: software: new games
Topic: Freddy the Frog - re-write - 30 years over due :-)
Replies: 4
Views: 137

Re: Freddy the Frog - re-write - 30 years over due :-)

Looking good! You've come to the right place to learn some assembly language.
by sydney
Tue Sep 12, 2017 11:15 am
Forum: introduce yourself
Topic: First word plus to PC
Replies: 12
Views: 190

Re: First word plus to PC

happywarrior wrote:I'm in Dorset in England. What does image the disc mean?


It means to take the contents of the disk and put them into a file which can be read by emulators on a pc. You can then extract the files you want from the 'image'.
by sydney
Mon Sep 11, 2017 9:43 pm
Forum: software: games - high scores
Topic: High Score Challenge S8 - R1 - A Maze In Space
Replies: 33
Views: 721

Re: High Score Challenge S8 - R1 - A Maze In Space

High Score Table Updated!
by sydney
Sun Sep 10, 2017 12:37 pm
Forum: software: classic games
Topic: using beebem to save exile
Replies: 2
Views: 146

Re: using beebem to save exile

Don't use reset from the beebem menu but use break (f12) or Ctrl-break then reload.
by sydney
Thu Sep 07, 2017 2:06 pm
Forum: software: games - high scores
Topic: High Score Challenge S8 - R1 - A Maze In Space
Replies: 33
Views: 721

Re: High Score Challenge S8 - R1 - A Maze In Space

High score table uploaded!

Colin: I spelled your name correctly twice and openoffice decided to change it for me. I'll try harder next time.
by sydney
Fri Sep 01, 2017 9:41 pm
Forum: programming
Topic: Aseembler problems with #< and >#
Replies: 9
Views: 201

Re: Aseembler problems with #< and >#

PS Can you try giving the '-d' option to beebasm to tell it to dump the global symbol table? It would be interesting to see what it thinks the value of room1 is in your example. In my example it says: [{'room1':6534L,'room2':6543L,'start_rooms':2304L}] and 6534=&1986 as we'd expect. Well. I put...
by sydney
Fri Sep 01, 2017 9:34 pm
Forum: programming
Topic: Aseembler problems with #< and >#
Replies: 9
Views: 201

Re: Aseembler problems with #< and >#

Which version of BeebAsm are you on? From my release notes: 1.03 Bugfix: Corrected the unary < and > operators to correspond to HI and LO as appropriate. 1.08 - I'm pretty sure I downloaded it from github I never use < and > as they always confused the hell out of me (precisely why I created HI and...
by sydney
Fri Sep 01, 2017 8:54 pm
Forum: programming
Topic: Aseembler problems with #< and >#
Replies: 9
Views: 201

Re: Aseembler problems with #< and >#

LO and HI seems to have fixed it. I'll post more later once the wife drifts off to sleep!
by sydney
Fri Sep 01, 2017 6:27 pm
Forum: programming
Topic: Aseembler problems with #< and >#
Replies: 9
Views: 201

Aseembler problems with #< and >#

The following two snippets of code have got me pretty confused. I've included the beebasm output too. The first one seem to be assembling incorrectly, I'd expect &9A to hold the lsb and &9B to hold the msb like in the second snippet. Is my understanding of this wrong? .start_rooms lda #<room...
by sydney
Tue Aug 29, 2017 9:07 pm
Forum: programming
Topic: Procedural greneration
Replies: 3
Views: 169

Re: Procedural greneration

Thanks guys.
I'm going to try to tire the kids out tomorrow morning so I can get some peace and quiet in the afternoon and get some coding done.
by sydney
Tue Aug 29, 2017 4:22 pm
Forum: programming
Topic: Procedural greneration
Replies: 3
Views: 169

Procedural greneration

I'm playing around with the possibility of writing a 'Roguelike' and the procedural generation of the levels. I'm starting with a seed value of two bytes and use the first byte to set a variable then add the two bytes, replace the first byte with the second and store the sum in the second byte's spa...
by sydney
Mon Aug 28, 2017 2:48 pm
Forum: development tools
Topic: beebasm putbasic problem
Replies: 9
Views: 280

Re: beebasm putbasic problem

So so simple! :lol:

I'm sure I'd read line numbers were optional. Thanks for the quick answer.
by sydney
Mon Aug 28, 2017 2:13 pm
Forum: development tools
Topic: beebasm putbasic problem
Replies: 9
Views: 280

beebasm putbasic problem

Every time I try to use PUTBASIC, even with a very simple source and BASIC file, I get the following error: Error: test.bas: Unspecified file error. My source file (test.asm) is: PUTBASIC "test.bas", "test" My BASIC file (test.bas) is: 10PRINT"SYD CANT CODE" GOTO10 and ...
by sydney
Mon Aug 28, 2017 1:19 pm
Forum: software: classic games
Topic: Exile
Replies: 19
Views: 1609

Re: Exile

I think it had such an impression on Acorn gamers because it stood out more on Acorns than those other systems. Exile on the beeb is voted number 3, with 12 votes, in my top 100 list as voted for by beeb/electron users here . On the C64 it's number 28, with 72 votes, as shown here and pressing the g...
by sydney
Mon Aug 28, 2017 1:01 pm
Forum: software: classic games
Topic: Exile
Replies: 19
Views: 1609

Re: Exile

davidb wrote:...though I don't know where he gets the idea that the majority of players experienced it on those platforms.....


I think the game was quite popular on both the c64 and amiga. A game with poor sales figures on either of those systems still probably outsells a 1988 BBC/electron best seller.
by sydney
Wed Aug 23, 2017 11:11 am
Forum: off-topic
Topic: LOLPRICE
Replies: 2630
Views: 166398

Re: LOLPRICE

danielj wrote:Ridiculous:
http://www.ebay.co.uk/itm/192051517198

d.


If you click on the description it's priced at £299.95
Still way too much though.

Go to advanced search