Nice work as ever PJPJ wrote:Relive the amazing Olympic starting ceremony in glorious SID 8-bit sound with the official BBC Micro Olympic SID disk!
&&_00 etc., are all defined elsewhere. IIRC, they're macros, but it's been a little while since I looked at the code.PitfallJones wrote:Code: Select all
static void *itab[256] = { &&_00, &&_01, &&_02, &&_03, &&_04, &&_05, &&_06, &&_07, &&_08, &&_09, &&_0a, &&_0b, &&_0c, &&_0d, &&_0e, &&_0f,
It is 'normal c', some of the cleanest I've seen for a while.PitfallJones wrote:Could somebody translate it into normal 'c' ?
It doesn't have to be fast - just compile....
Pretty much what sidreloc automates. My patched version (to also relocate the SID address) certainly seems to have a decent success rate converting tunes to play under a patched sidplay2, however, I'm fairly obviously missing something important about getting a SID to play on BeebSID. For that reason, I'd be very interested in someone taking a look at the SID conversion attempts I posted earlier.PitfallJones wrote:But then the problem arises of data that contains code addresses - to do that it's easiest to simulate the code - I use a modified version of Sidplayer to do that.
It's based on relocating the code to another location, and then it doing the same thing to the SID at the same times under emulation. As written, the output's intended for a C64. You lose a few more when you also relocate the SID to BeebSID addresses, of course.PitfallJones wrote:So his quoted 'success' rate is very generous I think.
I don't have any of the stuff to build it on Windows, but I could throw it through sidreloc here, if you let me know where to relocate it to.PitfallJones wrote:If someone can post me the win32 exe for sidreloc I can probably add 'Can't get no Satisfaction'
Perhaps the C64 community have something else we can pillage and/or loot in that respect.PitfallJones wrote:I have worked out how to convert the notes in a MIDI file over to a SID but the result is rather bland - what we need is someone to give us a tutorial on making good SID envelopes and instrument timbre - maybe Tom? his ST conversions sound pretty good. If anyone wants to step-up it would be much appreciated!
By normal 'c' I mean straight plain long handed 'c' without all the ## define stuff - you know like how 6502 cores are normally written in Beebem and B-em for instance.It is 'normal c', some of the cleanest I've seen for a while.
Code: Select all
static void *itab[256] = {
&&_00, &&_01, &&_02, &&_03, &&_04, &&_05, &&_06, &&_07, &&_08, &&_09, &&_0a, &&_0b, &&_0c, &&_0d, &&_0e, &&_0f,I quite agree about the evils of Visual C - unfortunately it's the defacto standard so the world is stuck with it (and it's what I use at work).Unfortunately, Visual C has somewhat of a reputation for not speaking normal C (For that matter, Visual C++ has a similar reputation for C++). The reputation isn't helped by their refusal to support C99; which is quite possibly at the base of your issue. Perhaps using a GCC port or the Intel compiler would give you more success?
Visual C the defacto Standard? A Subjective Statement if ever I head one. [I always try to avoid putting in a window server where I can put int proprietary Unix or Linux).PitfallJones wrote: I quite agree about the evils of Visual C - unfortunately it's the defacto standard so the world is stuck with it (and it's what I use at work).
GNU on the other hand seems to be a mass of variations like mingw, cygwin, djgcpp. - I used to have about 4 different 'c' compilers installed on my PC - now I just have one.... life's too short to maintain it all! Luckily most of the code websites (codeproject etc.) are all Visual C based and the majority of emulators writers support Visual C these days.
That's not strictly true, whilst DJGPP is for DOS, it uses a DOS extender, and so is 32bit, and will only run on a 386 or above. It is as far as I remember from when I was using it, however a port of gcc.Samwise wrote: djgcpp isn't really comparable to Visual C or gcc, AIUI - it's a 16-bit port from way back in the 90s i.e. it's a port to DOS, not modern versions of Windows.
As someone who earns a living from using C I read this with some interest. There is not a lot I don't know about how to use it, mostly the more obscure little used stuff. I had never heard of &&.PitfallJones wrote: I can sort of figure out that he's defining all the commands for each opcode and then listing the addresses of each opcode routine in a table.
But I'm not surprised that I can't compile this - it looks like a table of addresses but && is a 'c' keyword so what does &&_00 mean?Code: Select all
static void *itab[256] = { &&_00, &&_01, &&_02, &&_03, &&_04, &&_05, &&_06, &&_07, &&_08, &&_09, &&_0a, &&_0b, &&_0c, &&_0d, &&_0e, &&_0f,
You can use && in Visual C++ 2010 to define and initialise an rvalue reference.simes wrote: It turns out that it is a GCC specific extension
Code: Select all
Monty On The Run - SID2MIDI Text/SID Dump
PW = pulse width (0-4095)
WF = waveform (xy : 1?=triangle, 2?=sawtooth, 4?=pulse, 8?=noise)
(?2=synchronization, ?4=ring modulation, ?6=sync+ringmod)
VL = volume level (0-FF)
Filter type: L = low-pass, B = band-pass, H = high-pass
Filter voices: 1__ = filter on voice 1, _2_ = voice 2, __3 = voice 3, and so on
Filter cut-off frequency (SID value, 0-7F0)
Filter resonance (SID value, 0-F)
Time format: minute:second.hundredth
Voice 1 Voice 2 Voice 3
Time Note Freq PW WF ADSR VL Note Freq PW WF ADSR VL Note Freq PW WF ADSR VL Filter
============================================================================================================
00:00.00 >D-7< ---- 2048 40 0000 ff >H-5< ---- 3136 40 0000 ff >G-1< ---- 2944 40 0000 ff ___ ___ 0 0
00:00.02 +++ ---- 2048 40 0440 ff +++ ---- 3136 40 3fff ff +++ ---- 2944 40 0970 ff ___ ___ 0 0
00:00.04 +++ ---- 2048 40 0440 ff +++ ---- 3136 40 3fff ff +++ ---- 2944 40 0970 ff ___ ___ 0 0
00:00.06 +++ ---- 2048 40 0440 ff +++ ---- 3136 40 3fff ff +++ ---- 2944 40 0970 ff ___ ___ 0 0
00:00.08 +++ ---- 2048 40 0440 ff +++ ---- 3360 40 3fff ff +++ ---- 2944 40 0970 ff ___ ___ 0 0
... had to type that carefully ... one letter makes all the difference ... 
Hey -that's a great site - thanks. I have three albums I think - one with a 'terrific' version of Bohemian Rhapsody - when I was a kid I though the songs were the real thing!Oh I remember them. I had Volume 61 from 1977. A neighbour bought it as a birthday present...
Excellent choice of Benny Hill :-)Cheers guys this is a very nifty little addition to my Acorn setup, playing through the Master speaker
