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Build, or buy, a low-cost 2 Megabyte Agnus board for your 500/2000.
Gives you 2 megabytes of chip RAM. Very professionally done.
Here is the revision information for those wanting to know what the
difference is between the versions.
Rev 5.0d5 21-Oct-95
1. Since RAM prices have risen since we originally set our prices, we
are forced to either stop selling the boards or follow the increase
in RAM prices. Our markup on the boards is extremely small
and we cannot afford to eat the difference in the price of RAM.
If RAM prices rise more we will have to raise our price accordingly
again, but at this time we don't anticipate it happening soon.
Rev 5.0d4 21-Nov-93
1. Double oops! There was another mistake in the file
"PAL-NTSC_SWITCHER.IFF". The resistor and wire were shown to be
connected to the wrong pin of the PLCC plug. The error in this
diagram will cause no damage, but will simply cause the computer
to think there was a memory error, and put up a red screen, when
set for NTSC mode. Reconnecting the wire and resistor to the
proper pin will fix the problem. The file "PAL-NTSC_SWITCHER.IFF"
has ben updated to version 2.0 which shows the proper connection.
Rev 5.0d3 23-Sep-93
1. Initially we said that the 8375 Agnus would not work. This used to
be correct. However, there is a new Agnus marked 8375B that has a
part number of 318069-03. This is the only version of the 8375
Agnus that will work. It must say part number 318069-03 or it will
not work. The 8372B Agnus still works fine, and it also has a part
number of 318069-03. The text file "TTMAP50D.DOC" and picture file
"TTMAP50D_PARTS1.IFF" have been changed to reflect the new Agnus
option.
Rev 5.0d2 8-Sep-93
1. Oops! This is what we get for working on a diagram late at night.
In the picture file "PAL-NTSC_SWITCHER.IFF" one of the wires that
connected the switch to the board was on the wrong side of the
resistor. This has been fixed in the diagram.
Rev 5.0d1 7-Sep-93
1. We were able to buy most of the parts in bulk which decreased the
cost. This is reflected on the order form price list.
2. We were able to get very good pricing on the 2 megabyte Agnus chip
and include it as an option. This is shown on the order form.
3. We included an IFF diagram showing how to add a PAL/NTSC switcher.
This diagram is the picture file "PAL-NTSC_SWITCHER.IFF"
4. The label on the 256x4 RAM chip in the picture file
"TTMAP50D_PARTS1.IFF" incorrectly said "PAL". We changed it to
corectly say "256x4".
Rev 5.0d 21-Aug-93 Initial release
1. No changes. This was the first release.
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Contents of docs/hard/2MegAgnus50d5.lhaPERMISSION UID GID PACKED SIZE RATIO METHOD CRC STAMP NAME
---------- ----------- ------- ------- ------ ---------- ------------ ----------
[generic] 16517 45002 36.7% -lh5- 37dc Nov 21 1993 pal-ntsc_switcher.iff
[generic] 1221 2609 46.8% -lh5- 8abf Oct 21 1995 readmefirst
[generic] 17053 52249 32.6% -lh5- 64c0 Oct 21 1995 ttmap50d.doc
[generic] 18126 59104 30.7% -lh5- 086c Aug 19 1993 ttmap50d_assembly.iff
[generic] 27968 109640 25.5% -lh5- c316 Aug 19 1993 ttmap50d_board.iff
[generic] 12237 34086 35.9% -lh5- 0b87 Aug 19 1993 ttmap50d_clip.iff
[generic] 19687 57392 34.3% -lh5- 8bc9 Aug 19 1993 ttmap50d_logic.iff
[generic] 1303 6985 18.7% -lh5- c6c2 Aug 20 1993 ttmap50d_pal.pld
[generic] 14107 49148 28.7% -lh5- b4b9 Sep 23 1993 ttmap50d_parts1.iff
[generic] 11254 36332 31.0% -lh5- 8152 Feb 16 1994 ttmap50d_parts2.iff
[generic] 11483 34300 33.5% -lh5- 21ae Aug 19 1993 ttmap50d_probes.iff
[generic] 19912 67604 29.5% -lh5- a163 Aug 19 1993 ttmap50d_schematic1.iff
[generic] 15557 63778 24.4% -lh5- 570d Aug 19 1993 ttmap50d_schematic2.iff
---------- ----------- ------- ------- ------ ---------- ------------ ----------
Total 13 files 186425 618229 30.2% Oct 23 1995
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