Click Here
home features news forums classifieds faqs links search
6072 members 
Amiga Q&A /  Free for All /  Emulation /  Gaming / (Latest Posts)



Lost Password?

Don't have an account yet?
Register now!

Your support is needed and is appreciated as is primarily dependent upon the support of its users.

Main sections
OS4 Zone
IRC Network
AmigaWorld Radio
Top Members
Amiga Dealers
About Us
Terms of Service

IRC Channel
Ports: 1024,5555, 6665-6669
SSL port: 6697
Channel: #Amigaworld
Channel Policy and Guidelines

Who's Online
68 crawler(s) on-line.
 17 guest(s) on-line.
 0 member(s) on-line.

You are an anonymous user.
Register Now!
 cdimauro:  8 mins ago
 RobertB:  17 mins ago
 matthey:  45 mins ago
 logicalheart:  1 hr 32 mins ago
 MEGA_RJ_MICAL:  2 hrs 14 mins ago
 kolla:  4 hrs 7 mins ago
 Karlos:  4 hrs 9 mins ago
 amigakit:  4 hrs 11 mins ago
 eliyahu:  4 hrs 45 mins ago
 Fairdinkem:  4 hrs 53 mins ago

Software News   Software News : Arnold on Amiga
   posted by drHirudo on 17-May-2006 19:12:51 (2224 reads)
The Amstrad CPC emulator Arnold has been ported to AmigaOS 4. Click here for a screenshot of here to download it.


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.


- 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

Most read story about Software News
UBoot 2010.06.04 for Sam460ex available

Last news about Software News
Hollywood APK Compiler 4.0 released
Printer Friendly Page  Send this Story to a Friend

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

keep up the good work doctor

See my blog and collection website! .

 Status: Offline
Profile     Report this post  
Re: Arnold on Amiga.
Posted on 18-May-2006 6:48:42
#2 ]
Super Member
Joined: 13-Mar-2003
Posts: 1441
From: Somerset, UK


A1200T 603e 330Mhz - Mediator TX OS4.1 F.E.
CDTV 8MB Fast, OS3.1, SCSI, MicroSD SCSI & CD32 FMV
X5000, X1000, A1XE with OS4.1F.E.

 Status: Offline
Profile     Report this post  
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!

Dark Lord Design Wicked Solutions For Damned Problems

 Status: Offline
Profile     Report this post  
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..


Currently planning to upgrade my Amstrad CPC

 Status: Offline
Profile     Report this post  
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.

micro Amiga One (AmigaOS 4.1) & Amiga 1200 68k+Mediator PCI (AmigaOS 3.x)

 Status: Offline
Profile     Report this post  
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...

 Status: Offline
Profile     Report this post  
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

Add ME!!

 Status: Offline
Profile     Report this post  
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:


 Status: Offline
Profile     Report this post  
Re: Arnold on Amiga.
Posted on 19-May-2006 19:33:27
#9 ]
Super Member
Joined: 15-Mar-2003
Posts: 1932
From: Yharnam


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.

 Status: Offline
Profile     Report this post  
[ home ][ about us ][ privacy ] [ forums ][ classifieds ] [ links ][ news archive ] [ link to us ][ user account ]
Copyright (C) 2000 - 2019 was originally founded by David Doyle