Tuesday June 25th, 2019
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Tempest is an exciting game and did very well in arcades despite the problematic XY monitor and they can be found very easily around the USA. The cabaret and cocktail cabinets are nice in that they are small and light, but they don't compare to the stylish cabinet of the upright!
Tempest #1Brad Martinson bought this Tempest(Front View) from his friend John. Upon closer inspection though, he realized that it was Serial #0001. The PCB is labeled "Vortex" and the wiring harness is labeled "Aliens". The Control Panel is completely black with Dymo Label's for instructions. By looking at the Side View of the cabinet you can see that there is no sideart and upon closer inspection though you will notice that the cabinet stripes are actually routed out strips! Everything else is pretty much just like a normal production cabinet. The monitor however has a homemade Protection PCB wired into it. This game did have one important feature that was not included in the original cabinet, that would be the rats nest that was in the light fixture!! Great find Brad/John!!
LinksHere is a short interview with with the designer..
Nick Sayer has written an AMAZING HTML TROUBLESHOOTING FLOWCHART for Tempest problems.
Gregg Woodcock has written a terrific Tempest Hardware Description & Troubleshooting Guide.
Tempest ROM Text Summary
Jeff Hendrix recently figured out all the ROM's and re-organized them into 2K blocks for all us shmoes with older boardsets. He has also written up a short and concise readme file. Enjoy!
Tempest Version 1 ROM Images :includes the score cheat below.
Tempest Version 2 ROM Images :corrects the scoring cheat.
Tempest Version 3 ROM Images :Corrects screen collapse between players
Mathbox PROM data For the 74S288 Proms.
A Mad Delusional RGVAC'er did THIS (It's totally TUBULAR! Man!!)
Tempest DIP Switch Settings
Self Test Error Codes
Tempest Memory Map
CheatsThis is a cheat that was aparently left in by somebody at Atari. It was removed in ROM 217 and 222 Software Revision 2. Given a score with the format XXYYZZ: XX must be greater than 16, YY between 29 and 60, and ZZ is a code.
Codes for ZZ are as follows:
01 - access bookkeeping totals
05 - play during attract mode
06 - 40 credits
11 - 40 credits
12 - 40 credits
14 - credit sound without actual credit
15 - credit sound without actual credit
16 - 40 credits
17 - 40 credits
18 - 40 credits
41 - switch last 2 digits of score
42 - increase score quickly
46 - demonstration mode
50 - player moves by itself
51 - player moves by itself
60 - objects drift down
66 - objects drift right
67 - objects jump
68 - objects drift up
70 - objects drift up
48 - 255 extra lives
More...Craig Johnson wrote and added this info...
Even More...This info is from Scott Payton...
Go back to the Atari Vector Page
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