Amiga Diagnostic Rom

[Lane Frisch]

TheAmiga Diagnostic ROM is used to debug and test Amiga mainboards. You replace the normal Kickstart ROMs with these DiagROMs and your Amiga boots into a diagnostic menu. From there you can select many different testing routines for checking Chip- and Fast-RAM, Serial and Parallel ports, mouse and joystick ports, CIA chips, IRQ channels, testing audio and video output and much more. The Parallel and Serial port loopback dongles are also usable for Amiga Test Kit which can be booted from floppy disk.

Important note for Amiga 1000 users only: The parallel and serial port dongles do not comply with the special Amiga 1000 parallel and serial ports. However, you can use one of these parallel port and/or serial port adapters to use the dongle on the Amiga 1000. A serial port adapter for the Amiga 1000 is currently in the design phase.

Even the ancient 0.7 ROM image is included, as it is required to run some memorable software, such as the one that was demonstrated at the 1985 Launch of Amiga event in New York, with Andy Warhol and Debbie Harry. These items have been acquired or licensed by Cloanto from the Amiga companies and include newer developments by Cloanto and by other third parties.

The disk-based versions 1.3, 2.04, 2.1, 3.0 and 3.1 are included as full floppy disk image sets, with 1.3, 2.1 and 3.1 also as preinstalled hard disk images. Other disk-based versions are included for historical reasons, in a more limited format sufficient to boot the system.

Amiga Forever includes a preinstalled Workbench 3.X environment (newer than 3.1), and also includes or supports operating systems not originally released by Commodore (e.g. AROS), as well as hardware diagnostic systems and operating systems not originally meant to run on Amiga hardware.

The Value Edition of Amiga Forever includes only Workbench 1.3 and versions 1.1, 1.2 and 1.3of the "Kickstart" ROM, which is in general sufficient to run more than 70% of Amiga games and other older software. Amiga Forever Plus Edition contains all the additional ROM and operating system versions.

The licenses for certain third-party files which were originally bundled with the Amigaoperating system were not renewed, and are therefore in part missing in disks released after a certain date (e.g. in version 1.3 of the Amiga operating system as shipped with the Amiga 3000in 1991). Cloanto was able to license some of these original components directly from the copyright holders, and to include them in Amiga Forever.

Cloanto placed a high priority on preserving and respecting the original look, feel and compatibility of version 3.1 of the operating system as it was released before the Commodore-Amiga development team ceased maintenance of the operating system. Amiga Forever also includes internally developed or fully licensed additional preinstalled components, such as system patches, GlowIcons, TCP/IP, RTG, etc. Amiga Forever contains instructions on how to disable such add-ons without affecting functionality, if so desired.

Active termination is required to get newer high performance drives working on vintage computers. Unfortunately both the Amiga and older Apple computers use a DB25 SCSI connector which makes finding a suitable terminator quite difficult. GTERM25 solves this problem providing a high performance active terminator with a DB25 connector and SCSI diagnostic LEDs.

The Amiga, like many other computers of the late 80s, uses 16-bit wide mask ROMs to store the machine firmware. Unfortunately, the pinout of these ROMs is incompatible with the JEDEC defined EPROM pinout. Memory manufacturers produced "ROM compatible" EPROMS like the 27C400 to allow development and quick turn manufacturing. These EPROMS are however becoming quite hard to find and still require a UV lamp to erase the chips. F2R16 brings all the benefits of modern flash memory technology to any platform designed to use these obsolete devices.

Active termination is required to get newer higher performance drives working on vintage computers. Unfortunately both the Amiga and older Apple computers use a DB25 SCSI connector which makes finding a suitable terminator quite difficult. GTERM25 solves this problem providing a high performance active terminator with a DB25 connector and SCSI diagnostic LEDs.

The Minipro TL866 is very popular among hobbyist because of its low price and ease of use. Its list of supported chips is however somewhat limited compared to more expensive professional programmers. The E2R16 adapter adds support for the ROM pinout compatible EPROM of the 27C400 series which are compatible with Amiga computers and many arcade machines.

The GGLABS A520HD is the HDTV equivalent of the classic Commodore A520 TV modulator. Instead of encoding the Amiga video signal to a low quality composite output it converts the RGB output to a high quality YPbPr signal compatible with HDTVs with a component input. The A520HD connects to the Amiga 23-pin video port and is powered directly from the system.

Context. This paper is part of a series involving the AMIGA project (Analysis of the Interstellar Medium of Isolated GAlaxies), which identifies and studies a statistically significant sample of the most isolated galaxies in the northern sky.

Aims. We present a catalogue of nuclear activity, traced by optical emission lines, in a well-defined sample of the most isolated galaxies in the local Universe, which will be used as a basis for studying the effect of the environment on nuclear activity.

Methods. We obtained spectral data from the 6th Data Release of the Sloan Digital Sky Survey, which were inspected in a semi-automatic way. We subtracted the underlying stellar populations from the spectra (using the software Starlight) and modelled the nuclear emission features. Standard emission-line diagnostics diagrams were applied, using a new classification scheme that takes into account censored data, to classify the type of nuclear emission.

Results. We provide a final catalogue of spectroscopic data, stellar populations, emission lines and classification of optical nuclear activity for AMIGA galaxies. The prevalence of optical active galactic nuclei (AGN) in AMIGA galaxies is 20.4%, or 36.7% including transition objects. The fraction of AGN increases steeply towards earlier morphological types and higher luminosities. We compare these results with a matched analysis of galaxies in isolated denser environments (Hickson Compact Groups). After correcting for the effects of the morphology and luminosity, we find that there is no evidence for a difference in the prevalence of AGN between isolated and compact group galaxies, and we discuss the implications of this result.

However, different studies have yielded contradictory results: some studies find a higher local density of companions near galaxies hosting an AGN or a higher prevalence of AGN in interacting galaxies (Petrosian 1982; Dahari 1985; MacKenty 1990; Rafanelli et al. 1995, 1997; Alonso et al. 2007; Ellison et al. 2011; Liu et al. 2012), while others find no excess, or only a marginal excess (Bushouse 1986; Laurikainen & Salo 1995; Schmitt 2001; Miller et al. 2003; Ellison et al. 2008; Li et al. 2008). Schawinski et al. (2009, 2010) found a clear relation between some AGN and the signatures of a previous merger. In recent studies the relation between X-Ray AGN and environment was also explored (Silverman et al. 2009; Haggard et al. 2010; Tasse et al. 2011), finding that this relation may depend on the mass of the host galaxy (Silverman et al. 2009). Another possible source of discrepancy involves the methodology used to establish the presence of an AGN. Subtraction or non-subtraction of the stellar component from the nuclear light may lead to differences in the nuclear emission classification. This is particularly true for weak emission lines, which might be affected not just by a low signal-to-noise ratio, but also by details of the stellar spectrum (Ho et al. 1997). The use of different classification criteria to evaluate whether the nuclear emission is powered by star formation (SF) or by an AGN also complicates the direct comparison of results found in different studies.

Here, we present a catalogue of nuclear properties for AMIGA galaxies obtained from optical spectra provided by the Sloan Digital Sky Survey (SDSS; York et al. 2000; Adelman-McCarthy et al. 2008) in its 6th Data Release. In Sect. 2 we present the sample of galaxies used in this study and describe the compilation and reduction of the data, including the subtraction of the stellar contribution from the nuclear spectra and the measurement of emission lines. The method used for the classification of the nuclei, which takes into account the presence of censored data, is presented in Sect. 3, together with the final classification of the nuclei and its relation with the properties of the galaxies. A comparison with galaxies in a denser environment (compact groups) is analysed in Sect. 4. Finally, we present a summary of the work, followed by a discussion about the effect of major-mergers in the triggering of nuclear activity and our conclusions, in Sect. 5.

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