This file was generously donated and written by Greg Woodcock........... Here is my latest tempest.rom info file; if you want the 3xx ROM images RLS made and I renamed, let me know. Tempest board versions -01 and -02 (most boards) use all the ROM sockets. All EPROMs are type 2716 (but not TMS 2716) but you can use 4716s if you can't find any 2716s. loc part num cksm filename --- ---------- ---- ---------- D1 136002-101 ???? E1 136002-102 ???? F1 136002-103 ???? H1 136002-104 ???? J1 136002-105 ???? K1 136002-106 ???? LM1 136002-107 ???? MN1 136002-108 ???? P1 136002-109 ???? R1 136002-110 ???? NP3 136002-111 ???? 136002.111 R3 136002-112 ???? 136002.112 Any of the follwoing ROMs can be interchanged with the corresponding ROMs in the previous set. The 117 ROM is the one responsible for the backdoor to features after scoring 180,000. loc part num cksm filename --- ---------- ---- ---------- D1 136002-113 ???? 136002.113 E1 136002-114 ???? 136002.114 F1 136002-115 ???? 136002.115 H1 136002-116 ???? 136002.116 J1 136002-117 ???? 136002.117 K1 136002-118 ???? 136002.118 LM1 136002-119 ???? 136002.119 MN1 136002-120 ???? 136002.120 P1 136002-121 ???? 136002.121 R1 136002-122 ???? 136002.122 NP3 136002-123 ???? 136002.123 R3 136002-124 ???? 136002.124 The '2xx' ROMs replace the corresponding '1xx' ROMs on later released boards. The 217 ROM removes the score backdoors that allow free games and access to test, options, and statistics screens. The first 2 are 2716s and the second 2 are 2532s. This rom set is generally referred to as "Version 2". loc part num cksm filename --- ---------- ---- ---------- J1 136002-217 ???? 136002.217 R1 136002-222 ???? 136002.222 J1 136002-235 ???? 136002.235 P1 136002-237 ???? 136002.237 Tempest board versions -03 and -04 are strapped to use 2532s (32K instead of 16K for 2716s) and only use every other ROM socket. These boards use the following ROMs which seem to include a fix that keeps the spot killer from collapsing the screen during the intermissions between 1st and 2nd players in a 2 player game. This ROM set is generally referred to as "Version 3". loc part num cksm filename --- ---------- ---- ---------- D1 136002-133 ???? 136002.133 F1 136002-134 ???? 136002.134 J1 136002-135 ???? LM1 136002-136 ???? 136002.136 P1 136002-137 ???? NP3 136002-138 ???? 136002.138 Since most people don't want to restrap the 2716 Tempest board, here are 2716 versions of the essential 2532 files. While only one EPROM was responsible for the change that fixes the spot killer sensitivity on some screens, there are 3 ROMs that contain different data. If you replace ROMs 136002.214, 136002.215, and 136002.220, with ROMs 136002.314, 136002.315, and 136002.320, respectively, you will have all of the "version 3" code changes. loc part num cksm filename --- ---------- ---- ---------- E1 136002-314 ???? 136002.314 F1 136002-315 ???? 136002.315 MN1 136002-320 ???? 136002.320 The following ROMs are from the math box (the smaller, square PCB). The ROM at location A1 is type 74S288 (32 x 8) and all the rest are type 74S287 = AM27S21 (256 x 4). The same ROMs were used in Battlezone, RedBaron, Vortex {a (black and white?) Tempest prototype}, and Tempest. loc part num cksm filename --- ---------- ---- ---------- A1 136002-126 ???? 136002.126 E1 136002-127 ???? 136002.127 F1 136002-128 ???? 136002.128 H1 136002-129 ???? 136002.129 J1 136002-130 ???? 136002.130 K1 136002-131 ???? 136002.131 L1 136002-132 ???? 136002.132 --