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2megagnus50d4.readme
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1996-09-26
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3KB
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79 lines
Short: Build a 2 meg Agnus board for 500/2000
Type: hard/hack
Uploader: ttmap@struad.cts.com
Author: ttmap@struad.cts.com
Here is the revision information for those wanting to know what the
difference is between the versions.
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.
============================= Archive contents =============================
Original Packed Ratio Date Time Name
-------- ------- ----- --------- -------- -------------
45002 16517 63.2% 21-Nov-93 23:38:56 pal-ntsc_switcher.iff
2179 1020 53.1% 21-Nov-93 23:48:34 READMEFIRST
52249 17050 67.3% 28-Sep-93 22:33:34 ttmap50d.doc
59104 18126 69.3% 19-Aug-93 21:11:10 ttmap50d_assembly.iff
109640 27968 74.4% 19-Aug-93 21:10:44 ttmap50d_board.iff
34086 12237 64.0% 19-Aug-93 21:10:38 ttmap50d_clip.iff
57392 19687 65.6% 19-Aug-93 21:10:30 ttmap50d_logic.iff
6985 1303 81.3% 20-Aug-93 21:28:48 ttmap50d_pal.pld
49148 14107 71.2% 23-Sep-93 19:53:44 ttmap50d_parts1.iff
36330 11262 69.0% 06-Sep-93 13:29:18 ttmap50d_parts2.iff
34300 11483 66.5% 19-Aug-93 21:10:02 ttmap50d_probes.iff
67604 19912 70.5% 19-Aug-93 21:09:54 ttmap50d_schematic1.iff
63778 15557 75.6% 19-Aug-93 21:09:46 ttmap50d_schematic2.iff
-------- ------- ----- --------- --------
617797 186229 69.8% 04-Dec-93 11:23:56 13 files