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Software News   Software News : Arnold on Amiga
   posted by drHirudo on 17-May-2006 19:12:51 (1824 reads)
The Amstrad CPC emulator Arnold has been ported to AmigaOS 4. Click here for a screenshot of here to download it.

Features:

Arnold is very accurate and there is a small number of programs (mainly demos) that do not display correctly (especially those which use "horizontal splitting" technique). Arnold should run 99% of all programs and will run these as they would on a real CPC.


Arnold has been written to be portable and to be the most accurate Amstrad CPC and KC Compact emulation, and emulates many undocumented features.

+ Full 1us cycle emulation
+ undocumented features of the CPC+ asic
+ undocumented features of the various CRTC types
+ undocumented opcodes of the Z80
+ full support for Z80 interrupt mode 0, 1 and 2; interrupt mode 0 and mode 2 work as they would on the CPC+
(vectored interrupts supported, and the weird instruction execution of IM0)
+ all the features of the CPC+ hardware (including the incompatibilities between the CPC+ and the CPC)
+ all the features of the CPC hardware
+ Genius mouse
+ Digital joysticks
+ different ram expansions: DK'tronics 64k or Dk'Tronics 256K Silicon Disc
+ Multiface 2 (the final model with automatic switch)
+ Digiblaster 8-bit D/A sound device
+ Inicron RAMROM device
+ tape emulation using tape images or sampled/digitised sounds
+ disk emulation using disk images
+ CPC+ cartridge emulation using cartridge image files
+ scan-line interrupts from the Z8536 CIO for the KC Compact
+ undocumented operation of the AY-3-8912 I/O ports.

Not emulated:

- undocumented mode 3 in KC Compact mode
- analogue joysticks
- not all operations of the Z8536 in the KC Compact
- not all operations of the 8255 in the CPC are supported
- interrupt vector bug of CPC+ ASIC.
- keyboard "clash"
- undocumented flags are not perfect for all commands.
- cycle-level disc access; programs do not load at real speed.
- other Amstrad hardware...
- the sound emulation could do with more work
- the effects of the monitor hsync and vsync which produces bending patterns
with some programmed values
- monitor brightness control
- still many bugs with the CRTC emulations.

Other features:

+ ASL requesters.
+ Support for USB Joysitcks via Amiga Input.
+ Double size mode.

Bugs:

- uses all the cpu resources.
- slower in fullscreen mode than in window.
- renders graphics only on 32-bit depth.
- when emulating some noises - the emulator crashes - represented when playing "Space Harrier".
- double size mode is slow.
- when set frameskip, the emulator speeds up instead of working at 100% speed and skipping frames.
    

Related Links
· More about Software News
· News by drHirudo


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PosterThread
Toaks 
Re: Arnold on Amiga.
Posted on 18-May-2006 6:08:21
#1 ]
Elite Member
Joined: 10-Mar-2003
Posts: 8042
From: amigaguru.com

keep up the good work doctor


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JurassicC 
Re: Arnold on Amiga.
Posted on 18-May-2006 6:48:42
#2 ]
Super Member
Joined: 13-Mar-2003
Posts: 1433
From: Somerset, UK

;)


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CDTV 8MB Fast, OS3.1, SCSI, MicroSD SCSI & CD32 FMV
X5000, X1000, A1XE with OS4.1F.E.

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TrebleSix 
Re: Arnold on Amiga.
Posted on 18-May-2006 7:32:36
#3 ]
Elite Member
Joined: 6-Sep-2004
Posts: 3747
From: Pembrokeshire, Wales

Good work, ain't seen a Amstrad screenshot for yonk!


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Skunkfish 
Re: Arnold on Amiga.
Posted on 18-May-2006 11:56:39
#4 ]
Regular Member
Joined: 9-Sep-2004
Posts: 295
From: Liverpool, UK

Hehe, Amstrad CPC is my first computer.
I mean literally, I use it more than my PC and Amiga

Good work old chap, maybe a port of WinAPE would be good too..

Skunkfish


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SZAMAN 
Re: Arnold on Amiga
Posted on 18-May-2006 12:18:31
#5 ]
Regular Member
Joined: 7-Feb-2004
Posts: 132
From: Poland

Emulator freezes system (update4, 32-bit depth) on exit.


_________________
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x56h34 
Re: Arnold on Amiga
Posted on 18-May-2006 13:25:48
#6 ]
Regular Member
Joined: 3-Sep-2003
Posts: 439
From: ON, Canada

Remember when I said that I'd never appear on Amiga? I lied...

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samos3.9 
Re: Arnold on Amiga
Posted on 18-May-2006 18:20:59
#7 ]
Super Member
Joined: 3-Aug-2004
Posts: 1227
From: Kernow Cornwall

lol dont amstrad make interactive house phones now


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hatschi 
Re: Arnold on Amiga.
Posted on 18-May-2006 19:17:19
#8 ]
Elite Member
Joined: 1-Dec-2005
Posts: 2328
From: Good old Europe.

Just as a suggestion - check out SymbOS for CPC. This is simply amazing:

SymbOS

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Mr_Capehill 
Re: Arnold on Amiga.
Posted on 19-May-2006 19:33:27
#9 ]
Super Member
Joined: 15-Mar-2003
Posts: 1924
From: Yharnam

@hatschi

Wow, thanks for the link. I was, and still am, a big CPC fan. It was a nice machine, I used one actively til 1993/4 or something.

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