i make schematic for scc only but i don't know added picture with my post
Just mail me the picture and i'll host it and will post it in this topic.
Mail-address :
it's ok i send you 3 mappers konami scc and ascii 8k
These are the mappers from Jipe:
ASCII:
Konami:
SCC:
I made the konami mapper diagram posted on HansO website but it does not work.
This is the schematic: http://msx.retro8bits.com/msxdocs/MapperMSXKonami.pdf
I am using a modified ISA development board and I checked all wires twice with a multimeter.
There are no short circuits and no loose connections.
When I have the logic ICs in the machine does not start. Without ICs and with the board inserted the machine boots.
And when I have all the logic ICs except the 72ls02 in the machine also boots.
The 74ls02 is OK as I have tested it with my programmer. No errors on that one.
Is this mapper circuit 100% OK? or is there something I am missing?
I hope someone can help as I want to use this circuit as the basis for other projects.
Thanks a lot,
Erik
Can someone give the current link?
In the past I also build one of this mappers and my problem was that it needed a few pull-up resistors (jipe helped out on this). Those pull-up resistors however are not present in the schematic.
hello
see this My PCB for 1Mb ROM with mapper Konami (k4) or ASCII or SCC without scc chip (k5) in my proto board
select mapper via jumper...
http://msxvillage.fr/upload/pcb_module_ascii-konami.jpg
http://msxvillage.fr/upload/konami_jumper.jpg
http://msxvillage.fr/upload/ascii_jumper.jpg
image not loaded ??
this is a known issue with moder browsers don't show non-secure HTTP content on secured HTTPS sites. I changed settings in my browser meanwhile, so i can see pics, but both Chrome and Mozilla promise to remove this option in future. So it seems like everyone should move to HTTPS soon
It looks complicated.
no, it's not complicated, you just have to choose the right one to map with the jumpers and put the right rom, I'm also working on the 4Mb version
no, it's not complicated, you just have to choose the right one to map with the jumpers and put the right rom, I'm also working on the 4Mb version
What program do you have to flash the ROMs?