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Arnold - Amstrad CPC/CPC+ Emulator

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Year released:
[www].se [ftp].se [mirror].us
arnold-178.dmg (1.49 MB)
MD5: 57aa57c579ae41aaea62f2dc5c8ce9d7
For Mac OS 8.5 - 8.6 - Mac OS X
[www].se [ftp].se [mirror].us
arnold-170.dmg (1.34 MB)
MD5: 2fcda23eefb43817bb73b498c3cd4162
For Mac OS 8.5 - 8.6 - Mac OS X
[www].se [ftp].se [mirror].us
arnold-171.dmg (1.38 MB)
MD5: 97fa176af3157805b86c447ee052a112
For Mac OS 8.5 - 8.6 - Mac OS X
[www].se [ftp].se [mirror].us
arnold-172.dmg (1.25 MB)
MD5: 8b71815993d24325fea470976ce8e8af
For Mac OS 8.5 - 8.6 - Mac OS X
[www].se [ftp].se [mirror].us
arnold-173.dmg (1.52 MB)
MD5: aee9d4baf68b18849780e78a59449401
For Mac OS 8.5 - 8.6 - Mac OS X
[www].se [ftp].se [mirror].us
arnold-174.dmg (2.08 MB)
MD5: efc13b15b115e0382993ba1ab3d7a061
For Mac OS 8.5 - 8.6 - Mac OS X
[www].se [ftp].se [mirror].us
arnold-175.dmg (1.65 MB)
MD5: 6f9cd65f9d9d966bb27b5df45f1e135f
For Mac OS 8.5 - 8.6 - Mac OS X
[www].se [ftp].se [mirror].us
arnold-176.dmg (1.66 MB)
MD5: b91f310f5cccc15c50e121caa60122c8
For Mac OS 8.5 - 8.6 - Mac OS X
[www].se [ftp].se [mirror].us
arnold-177.dmg (1.65 MB)
MD5: 867f2de94b2d4934e5972f29c25138ee
For Mac OS 8.5 - 8.6 - Mac OS X
[www].se [ftp].se [mirror].us
arnold-16.sit (1.21 MB)
MD5: 035ec83c3f86a5afb7b73fb70277728f
For Mac OS 8.5 - 8.6 - Mac OS X
[www].se [ftp].se [mirror].us
arnold-155.sit (1.13 MB)
MD5: f51ba18470d37725a74c0f09bc2e0df3
For Mac OS 8.5 - 8.6 - Mac OS X
[www].se [ftp].se [mirror].us
arnold-161.sit (1.23 MB)
MD5: a192d15a2abe8ec5d5d620cebfa44883
For Mac OS 8.5 - 8.6 - Mac OS X
Guides on emulating older applications

v1.7.8 - September 27th, 2008 - Supports Emulator Enhancer.
Arnold features emulation for the five different models of Amstrad CPC - namely the
CPC464, CPC664, CPC6128, 464 Plus, and 6128 Plus. It can also emulate the
KC Compact, a bootleg of the CPC. Arnold features extremely precise emulation,
allowing even the most complicated demos to run without problems.

What is it?

Arnold is an Amstrad CPC/CPC+/GX4000 emulator. It can also emulate the KC Compact, a bootleg CPC clone.

Arnold was originally written by Kevin Thacker. The MacOS port was developed by Richard Bannister. The documentation was written by Jacques Azoulai, with updates and minor tweaks by Richard Bannister. The icons were designed as a special favour to me by PB1400c - thank you very much indeed!

When the CPC was originally developed, the code name of Arnold was used. This is where the name of the emulator comes from.

What is an Amstrad CPC?

The Amstrad CPC series was born in 1984 when Alan M. Sugar decided to enter the computer market. The first model, the CPC464, was launched in the same year, with support for Tapes only. The CPC664, a 464 with a disk drive, followed shortly afterwards, though it was quickly eclipsed by the CPC6128, a new model which included a vast 128K of RAM. The CPC series was a huge commercial success due its low price and small size. CPCs were also able to run much of the vast CP/M software library.

The CPC series included a very efficient BASIC environment built in to ROM, which naturally spawned lots of "Type-ins" in popular magazines, for example Amstrad User and Amstrad Action. The CPC also contributed, no doubt, to the birth and development of several well-known companies.

Based around a Z80 at 4MHz, the original CPC (464) had 64K of RAM and 32K of ROM, along with its internal tape recorder. 3 video modes were available - from 160*200 in 16 colours up to 640*200 in 2 colours with a 27 colour palette. Sound support consisted of 3 voices over 8 octaves, as well as a noise channel.

For some daft reason that may actually have made sense to nobody at all at the time, Amstrad decided to go the route of the non-standard 3" Disk Drive in the CPC, as in the PCW series. These disks could hold up to 178K per side as a rule, although there were specialised formats that could provide for much higher capacity. To a certain extent, the CPC disk drives were a dream come true for software companies. They had a rather unique feature - the ability to read up to 8K of data from a sector, but they could only write 4.5K to one. This meant that it was possible to produce disks which could not be duplicated at all without hardware modifications to the CPC.

The CPC Plus series was launched in September 1990 with a new design. There were three models in the range; 2 computers, the CPC464+ and CPC6128+, and one games console, the GX4000. The plus series included a cartridge port, more joystick ports, and other new connectors. Most significantly, the new series supported improved graphics, with 4096 colours available, as well as hardware sprites and scrolling.

Unfortunately the CPC plus systems never really made it - they suffered from compatibility problems with old software, and too few specific games - only about 20 cartridge games were ever made. In addition, 16-bit and 32-bit systems were beginning to take off, leaving Amstrad in the dust.

Amstrad developed a few PC compatible machines (PC1512 and PC1640) but these never really took off, and Amstrad finally returned to Hi-fi and Video in 1991.


Arnold has a list of different options for emulating the CPC exactly as you remember it. If you have not used a CPC before, you are probably best to stick with the default settings.

Note that the CPC Plus series isn't 100% compatible with the original CPC models, and as such some programs will not run on a Plus model. Conversely, any programs requiring special features of the Plus model will not work on the real CPC.

Arnold supports the five known types of CRTC (Cathode Ray Tube Controller) used in the different CPC models. For most software, there is no evident difference. Some demos work better with some CRTC models than others (Voyage 93 for example seems to work best with CRTC 0).

emulator required mac os x 10.4

Arnold 1.78 is not in Richard Bannister archive.

I upload all Arnold from Richard Bannister Archive for mac.
Arnold 1.5.1 to Arnold 1.6.1 require this system

Arnold requires a Power Macintosh with CarbonLib 1.2 or later installed. It works just
fine under Mac OS X.

Arnold 161 is mac os 8.6 or later
Arnold 151 is mac os 8.6 or later
Arnold 16 is mac os 8.6 or later
arnold 1.7.0 is OSX PPC
Arnold 17.1 is OSX PPC
Arnold 17.2 is OSX PPC
Arnold 17.3 is OSX PPC
Arnold 1.7.4 is universal for PPC and intel
Arnold 1.7.5 is universal for PPC and Intel.
Arnold 1.7.6 is universal for PPC and Intel.
Arnold 1.7.7 is Universal for PPC and Intel.
Arnold 1.7.8 is Universal for PPC and Intel.

Architecture: PPC PPC (Carbonized) x86 (Intel:Mac)

Universal for PPC and Intel.