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1
Programming / few noob questions
« Last post by gorgh on Today at 16:01 »
Hi there,
Since couple of days I'm working of port of the Yoomp for ZX Spectrum (gif in the attachment), and I want to try to port it to Amstrad as well, but there are some questions I have.
1. The unrolled code is circa 40 kb, do you think it's still possible to make a game with such amount of code? (is there a way to read data from the disk? )
2. What do I need to do first to get access to full 64 kb of RAM (usually on Atari there's a ROM switching procedure and setting own interrupts)
3. How much extra time does it take to write to video RAM? Is it comparable to ZX Spectrum and Atari? (15-30% )
2
Applications / Re: iMPdraw v2.0
« Last post by Ast on Today at 14:37 »
To follow the latest news, i give you rendez-vous on AmstradPlus Forum : http://amstradplus.forumforever.com/t462-iMPdraw-v2-0.htm#p6103


I am still working on iMPdraw v2, so stay tuned !!!
3
During some tests with SNA loading from command line in WinAPE, we have found this potential issue (See SNA and CPCtelera project with sources attached):
  • If you run WinAPE normally, wait untill it boots up and shows firmware messages, and then press F5 and load the SNA, it works as expected.
  • If you run WinAPE from command line, adding /SN:snapshot, the snapshot loads and runs, but an odd thing happens:
  • During some initial seconds (don't know how many, but 5-6 more or less), some keypresses are detected by key scan routines. In some cases, this keypresses affect the running software, when this software expects them.
After some debugging and digging, I have come to the conclusion that these keypresses seem like some sort of initialization routine from the emulator. Seem like simulated keypresses to produce DSK autoload or something similar. I may be totally wrong: it is just an educated guess.
@Executioner, could you please have a look at it?
I'm using WinAPE 2.0 beta 2.
4
Applications / Re: Arkos Tracker 2 - Released!
« Last post by Arnaud on Today at 13:55 »
The last used folder is the last one that will be shown. Maybe have different "last" folders according to the type of what is loaded (song, instrument ?)
Yes, it will be ok in this way.

Yes, I thought about it. Dully noted!
:)

Correct me if I'm wrong, but the pop-up should only show if the target instrument is empty.
I  Understand, when i add a new instrument by default it is "Single Beep". I should select "Empty".

I don't know exactly when the next version will be released, but I can tell you it will have many new features. I can't keep myself from adding new stuff... !
Great !

5
Glad you found it interesting.

Yes robcfg, I agree with you that the option to download TrueType versions of the fonts is a pretty neat idea.

Cheers,

Peter
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Applications / Re: Arkos Tracker 2 - Released!
« Last post by Targhan on Today at 12:09 »
Hi,


Quote
On loading instruments browse by default the arkos2/instruments directory
On loading songs browse by default the arkos2/songs directory




Not fond of these, because, in my experience, the arkos2/xxx directories are used only for testing, not for real composition. The last used folder is the last one that will be shown. Maybe have different "last" folders according to the type of what is loaded (song, instrument ?)


Quote
Add a contextual menu on instrument (faster than going to main menu to load another instrument)


Yes, I thought about it. Dully noted!


Quote
When loading a instrument i always have the Overwrite confirmation popup even it's a new instrument (i don't think this popup is really useful and it's annoying when testing instruments)


Correct me if I'm wrong, but the pop-up should only show if the target instrument is empty.


I don't know exactly when the next version will be released, but I can tell you it will have many new features. I can't keep myself from adding new stuff... !


Thanks for your feedback!
7
Excellent thanks, was thinking I may have to pad with a few NOPs to align the lines but was trying to avoid it :)
I'll give it a whirl, just a bit of fun but nice to play about with things that made to wow back in the day.


I'm trying to avoid the plus features for the moment while I get the hang of the original CPC but when I pick up an Amstrad id really like to get a plus to add to my collection( still have my original Amiga 1200 from '92 but I've updated it for the modern age, wifi, hdmi, CF Card etc. and picked up an Atari 7800 )


You'll enjoy the 68k, I found it pretty straight forward compared to the 8086( and now the Z80 ) as it's just data registers and address registers as opposed to specific accumulator regs etc.
My 68k programming back in the day was to interface with simple hardware devices so no game programming unfortunately.


I need to revisit the 68k again as I would like to do some Amiga programming( time is the enemy here :) ), I've been following Scoopex( just watching mind ) series for the Amiga - https://m.youtube.com/user/ScoopexUs
It works well with the Amiga Hardware Reference Manual and 68k reference manual. For the Amiga it's quite a lot to digest so it's good to have someone else to show the basics and get something up and running quickly.
Id imagine the ST is a lot more straight forward though as it's more like the CPC with very little hardware so probably a better starting point but for me i'd like to play about with the Amiga's copper etc.


I love playing around with the old hardware :)

8
That's a very interesting article!
Thanks for the link.
9
Nice article!


I think it’s also nice that he linked TTF versions of the fonts.


Thanks for sharing!
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Applications / Re: Arkos Tracker 2 - Released!
« Last post by Arnaud on Today at 09:58 »
Hello,
here some ideas following to my use of Arkos2 :
  • On loading instruments browse by default the arkos2/instruments directory
  • On loading songs browse by default the arkos2/songs directory
  • Add a contextual menu on instrument (faster than going to main menu to load another instrument)
  • When loading a instrument i always have the Overwrite confirmation popup even it's a new instrument (i don't think this popup is really useful and it's annoying when testing instruments)
Arnaud
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