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Indivision AGA Mk2 CR A1200/4000T
Flickerfixer for Amiga 1200 and Amiga 4000T(*) Computers
The Indivision AGA Mk2 CR A1200/4000T (Mk2cr) is the successor to the discontinued
Indivision AGA 1200
flicker fixer. As the name suggests, the new version also supports the Amiga 4000T
(not the A4000 desktop model, there's the
Indivision AGA Mk2 A4000/CD32
for use with that computer), but there's a caveat:
(*) Important Note:
Installation in the A4000T requires the replacement of the electrolytic capacitor
CE164C with a lower-profile type. In an A1200 computer, the hard disk cradle is
in the way, so a hard disk drive must be placed elsewhere.
Other Amiga models are not supported.
The Mk2cr sports a DVI-I connector instead of the usual VGA socket.
DVI-I provides digital as well as analog signals, so you can use modern TFT displays,
older TFT displays with analog input or CRT monitors alike (the latter two with a
Please don't forget to use the configuration options to add a VGA or HDMI adapter
if you intend to use the Mk2cr with a monitor that has no DVI but a VGA or HDMI input.
Performance and Compatibility:
The output pixel clock can go up to 135 MHz (the former Indivision AGA only allowed up to 71 MHz),
the data rate reaches more than 480 MBytes/s peak performance (used to be 330 MBytes/s peak);
50 Hz modes (e.g. PAL) can be promoted to 60+ Hz and thus be displayed on modern monitors;
16 MBytes framebuffer, entirely addressable (used to be 12 MBytes previously);
supports S-Hires and full 24-bit colour depth; unlike other internal flicker fixers, the
Mk2cr supports the BorderBlank flag.
On Screen Display:
A subtle semitransparent OSD replaces the splash screen of the predecessor model.
The Mk2cr is plugged over the Lisa chip, no other connection to the
motherboard is required (unlike other internal flicker fixers that also require a connection
to Alice). Due to a much enhanced 84-pin PLCC socket being used, the Indivision fits like
a glove and won't come off easily.
Modern FPGA technology and low power consumption (1.2V core voltage) make sure to
save energy and avoid heat problems.
Hardware updates can be downloaded from the Internet. Even timing corrections are possible,
allowing the Indivision AGA Mk2 CR to adapt even to the strangest chipset combinations
(e.g. Lisa chips made by NCR).
The configuration program and the current version of the flash program are rather expert
tools than an example of user friendliness. You can get the software directly here:
flash tool and core (pre-release version).