[Jul/12/98]

space force (Elcon 1981?)


1a    1c
2a    2c
-     3c
4a    4c

             2114 2114
2114         2114 2114
2114         2114 2114
                          
                               6m 6p 6s
8085                           7m 7p 7s


          8035    snd
          

-


[08/09/99]


               METEOROIDS        VENTURE

USES 8085 CPU W8035 FOR SOUND

NAME   LOCATION    ALL ARE 2716
---------------------
BM1V    6N         
BM2V    7N         
GM1V    6P         
GM2V    7P         
RM1V    6S         
RM2V    7S         
VM1     1A         
VM2     1C         
VM3     2A         
VM4     2C         
VM5     10K        
VM6     3C         
VM7     4A         
VM8     4C         

-

[MAME]

Space Force

Memory Map


0000-3fff   R	ROM
4000-43ff	R/W	RAM
7000-7002	R   input ports 0-2
7000		  W sound command
7001	      W sound CPU IRQ trigger on bit 3 falling edge
7002		  W unknown
7008		  W unknown
7009		  W unknown
700a		  W unknown
700b		  W flip screen
700c		  W unknown
700d		  W unknown
700e		  W main CPU interrupt enable (it uses RST7.5)
700f		  W unknown
8000-83ff   R/W bit 0-7 of character code
9000-93ff   R/W attributes RAM
				bit 0   - bit 8 of character code
				bit 1-3 - unused
				bit 4-6 - color
				bit 7   - unused
a000-a3ff	R/W X/Y scroll position of each character (can be scrolled up
				to 7 pixels in each direction)

-
