Universal Research Labs 1975
url1.c15 a 82s114 read as a 82s115
It complained about continuity error, but I disabled it to read
The 82s115 is a bigger chip and the address lines do not line up

82s115		82s114
A0		A0
A1		A1
A2		A2
A3		A3
A4		A4
A5		N/C
A6		A5
A7		A6
A8		A7

Data should be valid every other 32 bytes

Board powered up and showed a vertical race car game
Board was labeled 
(c) 1975 UNIVERSAL RESEARCH LABS INC
URL 8300
-2

URL1.BMP is a dump of url1.C15, if you remove every other 32 bytes
URL1_2.BMP is another dump of url1.C15, if you remove every other 32 bytes
They look like different size cars

The PCB looks like a Street Burners PCB, found on the Crazy Kong web site