Search found 14 matches

by varaktori
Sun Apr 06, 2014 11:31 am
Forum: Hardware
Topic: Who wants a Kiwi?
Replies: 73
Views: 140273

Re: Who wants a Kiwi?

simon wrote:Great! :)

@varaktori: How is your board doing?


I hope soon to get some spare time.
by varaktori
Sat Mar 08, 2014 4:56 pm
Forum: Hardware
Topic: SID
Replies: 20
Views: 70380

Re: SID

Thanks Chris! I also ordered Philips and Sanyo alternatives for that DAC chip as they are told to have better sound quality.
by varaktori
Sat Mar 08, 2014 12:08 pm
Forum: Hardware
Topic: SID
Replies: 20
Views: 70380

Re: SID

I just found YM278B-F and YAC513-M chips so maybe I design some sort of add on card. There seems to be no stock for YRW801 ROM chips and YSS225 sound FX processor chips?
by varaktori
Tue Mar 04, 2014 4:35 pm
Forum: Hardware
Topic: New hardware revision?
Replies: 95
Views: 201057

Re: New hardware revision?

My Kiwi PCB arrived today and yes those stickers are nice. :D
I wait some parts to arrive from Hong Kong.
by varaktori
Tue Feb 25, 2014 6:41 pm
Forum: Hardware
Topic: New hardware revision?
Replies: 95
Views: 201057

Re: New hardware revision?

My soldering iron is already heating up. :mrgreen:
by varaktori
Fri Feb 21, 2014 11:50 pm
Forum: Hardware
Topic: SID
Replies: 20
Views: 70380

Re: SID

Bob Yannes developed SID chip so why not use Ensoniq 5503DOC for future kiwi's? :)

http://www.buchty.net/ensoniq/5503.html
by varaktori
Tue Feb 18, 2014 3:35 pm
Forum: Hardware
Topic: SID
Replies: 20
Views: 70380

Re: SID

simon wrote:Do you really want to code the games in assembler? :)


Well m68k is very easy to code in assembler compared to many other CPU's. :)
by varaktori
Mon Feb 17, 2014 10:50 pm
Forum: Hardware
Topic: SID
Replies: 20
Views: 70380

Re: SID

OPL4 for game music and those SID chips for sound effects is good combination for future kiwi. ;)
And yes, I want refresh my assembler programming memories and write some games. :D
by varaktori
Mon Feb 17, 2014 10:16 pm
Forum: Hardware
Topic: SID
Replies: 20
Views: 70380

Re: SID

Chris wrote: Thanks goodness for 1980's arcade machines :lol:


If I remember right many of them has secondary processor just for sound. :)
by varaktori
Mon Feb 17, 2014 8:51 pm
Forum: Hardware
Topic: SID
Replies: 20
Views: 70380

Re: SID

In the later 8580 model this "bug" was fixed and samples were inaudible, but it is possible to revert this by soldering a 470k resistor or, if you want to be able to adjust the level, a 1M pot in series between EXT IN and GND. Even better sample playback can be achieved by altering the pu...