[06/03/98]

This romset is allegedly from a prototype machine that was displayed at the 1982 AMOA show
in Las Vegas. Two Sinistar programmers, RJ Mical and Noah Falstein, believe this to be so,
but it's not confirmed. The roms were labeled PROTO.
Here's some gameplay info:

1. Gameplay, not much difference, except sinistar scream cuts off during quick re-triggers,
   rather than one long scream.
2. More crystals per planetoid.
3. Sinistar death sometimes occurs offscreen.
4. Warp to next level in random direction, not just upper right.
5. Some parameters in operator adjust screen not present, such as set attract mode message.
6. The dripping blood sinistar logo looks like the marquee except more "rocky horror' ish.


Image name	Checksum

SINOLD01.ROM 	93297B04
SINOLD02.ROM 	AEBFC237
SINOLD03.ROM 	4EC6E890
SINOLD04.ROM 	F0825A62
SINOLD05.ROM 	8E1A31A0
SINOLD06.ROM 	16BC9023
SINOLD07.ROM 	F7CF870B
SINOLD08.ROM 	B72A8A4F
SINOLD09.ROM 	A7AA761A
SINOLD10.ROM 	3B785371
SINOLD11.ROM 	30ECB233



[Mar/13/96]

Sinistar ROM information
8/4/93

filename		type	cksm	label
-------------------	----	----	--------------------------------
sinistar.01		2732	6dc6	SINISTAR ROM 1-B 16-3004-38 or -53
sinistar.02		2732	af62	SINISTAR ROM 2-B 16-3004-39 or -54
sinistar.03		2732	ef20	SINISTAR ROM 3-B 16-3004-40 or -55
sinistar.04		2732	f733	SINISTAR ROM 4-B 16-3004-41 or -56
sinistar.05		2732	e8ef	SINISTAR ROM 5-B 16-3004-42 or -57
sinistar.06		2732	a7fc	SINISTAR ROM 6-B 16-3004-43 or -58
sinistar.07		2732	9b1a	SINISTAR ROM 7-B 16-3004-44 or -59
sinistar.08		2732	6559	SINISTAR ROM 8-B 16-3004-45 or -60
sinistar.09		2732	3f2a	SINISTAR ROM 9-B 16-3004-46 or -61
sinistar.10		2732	50f8	SINISTAR ROM 10-B 16-3004-47 or -62
sinistar.11		2732	e157	SINISTAR ROM 11-B 16-3004-48 or -63
sinistar.sound		2532	a822	SND. ROM 9 STD 808
sinistar.speech.ic4	2532	2f10	3004 SPEECH IC4 R1 16-3004-49
sinistar.speech.ic5	2532	f162	3004 SPEECH IC5 R1 16-3004-50
sinistar.speech.ic6	2532	f1f5	3004 SPEECH IC6 R1 16-3004-51
sinistar.speech.ic7	2532	cf27	3004 SPEECH IC7 R_ 16-3004-52
sinistar.decode.4	7641-5	eede	DECODE ROM 4
sinistar.decode.6	7641-5	ef48	DECODE ROM 6
sinitar.ste                             Second sound ROM for Cockpit version

There is also a second sound ROM used on a second sound board in the cockpit
version of Sinistar, but I don't have a copy of that.

The ROM board can be configured for 2732 or 2532 type EPROMs.  If you need
to replace an EPROM, make sure you use the same type as the original.

The video decode ROMs are Harris 7641-5 bipolar PROMs.  These were also made
by Motorola.  They can be read by an EPROM programmer set for a Motorola
68764, in which case the 512 actual bytes of data appear at addresses $e00 to
$fff, with the rest of the addresses containing either $ff or garbage.
Unfortunately a 68764 can't be used as a replacement as it is far too slow.
Cypress makes several high-speed CMOS PROMs and EPROMs that might be usable
as replacements, although I haven't tried any of them.  I'm not sure whether
these Cypress parts can be programmed by a typical EPROM programmer
configured for 27xx parts; refer to a Cypress data book for details.  If it
is necessary to burn a replacement for one of the video decode PROMs, the
most expedient aproach might be to wire an adapter to use the AMD 45 nS
27H010 parts.  Those parts are much higher capacity than is necessary, but
they are easy to get, not too expensive, and can be programmed by most EPROM
programmers.  Anyhow, I don't know why I'm writing this, as bipolar PROMs
aren't all that likely to fail.

Vendor   Part #  organization  max. access time (nS)  max supply current (mA)
-------  ------  ------------  ---------------------  -----------------------
Harris   7641-5     512 * 8             70                       180
Cypress  7C292A    2048 * 8             50                        90
Cypress  7C264     8192 * 8             55                       100
 
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