Indivision AGA MK3
Overview
Indivision AGA MK3 is a flickerfixer made for Amigas with AGA chipset. This version of the flickerfixer is built for the popular Amiga 1200 computer, and it can also be used in an A4000T with minor modifications to the A4000T mainboard (see further down).
While many other flickerfixers only support VGA output, Indivision AGA MK3 sports VGA and a fully digital output which lets you connect to a modern TV or a DVI monitor. Finally, you can connect your favourite computer to a modern flat screen and use super-hires resolutions on your workbench in full colour!
Indivision AGA MK3 does everything that it's predecessors did - and more! With the only exception of A2024 monitor modes, all Amiga screen modes are supported and can be sent to a digital or analogue monitor at almost any frame rate, either using standard VESA modes, or using custom output frequencies and size at the user's choice. Even custom screen modes like HighGFX can be used: Workbench resolutions of 1280x1024 pixels are possible without buying a graphics card.
Further, Indivision AGA MK3 supports synchronisation of the output signal with the computer's V-Sync signal, which was not possible with the predecessor models. This allows sliky-smooth animations and perfect scrolling without tearing. These fully synchronised modes may not be compatible with all VGA- or DVI monitors (mainly because they are 50Hz for PAL machines), but 50Hz is standard for all TVs with high-definition digital input.
Indivision AGA Mk3 is plugged over the Lisa chip. For the first time, a second connection is required to take advantage of all features of the product: An additional adapter is clipped on top of a CIA chip to route keyboard signals to the flicker fixer. This gives way for a huge practical improvement over previous versions of the flicker fixer: You can now make small adjustments to the output picture format, including positioning and re-sizing of the output picture without the need to load the configuration tool. While Indivision predecessors required the user to exit a game, load the config tool, make adjustments and then re-boot into the game, you can now open a simple menu using a hot-key combination, make adjustments with the keyboard or mouse and then exit this live configuration menu - all this without leaving the game or demo that's currently running.
Output screen modes can be saved "per input screen mode", so you can adjust your favourite Workbench resolution perfectly, while not affecting the settings you've chosen for PAL and NTSC games. Settings are saved in the flash of the flicker fixer, so they survive a reboot and/or power-cycle of the computer. As opposed to Indivision AGA MK2, more than one output mode can be saved, and instead of making manual adjustments using the live configuration menu described before, you can just "zap" through pre-sets that are ideal for a specific game or demo. This allows you to see the difference of intensity settings for the built-in scanline effect, or you can compare the scaling capabilities of your monitor with the new built-in scaler of Indivision AGA MK3.
Another improvement over the predecessor models is automatic monitor recognition: The configuration tool can detect what size of monitor is connected and make suggestions for ideal output frequencies that are within the specifications of the monitor. This reduces the "first setup" to a matter of minutes, maybe even seconds if you're using one of the presets for popular display panel sizes that we provide.
This flickerfixer will not fit into an A4000T out-of-the-box. Component CE164C gets in the way of the output cable connector and must be replaced with a lower-profile version prior to installing the flickerfixer. We recommend to do this before you order the product!
In-depth documentation and downloads
Indivision_AGA_MK3/doc for an in-depth documentation of the Indivision AGA MK3 config tool, including download links.
Indivision_AGA_MK3/liveconfig live configuration options
English instruction sheet with high-resolution pictures
Deutsche Kurzanleitung mit hochauflösenden Bildern
Indivision_AGA_MK3/hacking Live configuration adapter pinouts and modding ideas - no warranty!
Test core September 17th, 2020 Please test and report back in our support forum. Pixel clock limit if 155MHz!
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