113

(9 replies, posted in Commodore Computers)

martin_demsky wrote:

I also have C64, at the beginning i used normal composite RF out, but audio is really in bad quality, then i got grounded audio / s-video cable from retro computer shack (england) with gold connectors and quality is excellent (for s-video i use that common s-video to vga black box converter which does convertion acceptable to my vga/hdmi 24" samsung led monitor at right settings), at dualsid i believe very excellent is https://www.sidfx.dk, but i personally dont need another sid, even for example defMON supports it, because i am afraid to modify my C64G, it is in excellent condition, i have luck to get that one from czech republic and was used from 1991 upon my purchase maybe 5-times, so it was almost new smile))

Holy, thats pricier than I had imagined but it sure looks decent.
Thanks

nikola wrote:
martin_demsky wrote:

I also have C64, at the beginning i used normal composite RF out, but audio is really in bad quality, then i got grounded audio / s-video cable from retro computer shack (england) with gold connectors and quality is excellent (for s-video i use that common s-video to vga black box converter which does convertion acceptable to my vga/hdmi 24" samsung led monitor at right settings), at dualsid i believe very excellent is https://www.sidfx.dk, but i personally dont need another sid, even for example defMON supports it, because i am afraid to modify my C64G, it is in excellent condition, i have luck to get that one from czech republic and was used from 1991 upon my purchase maybe 5-times, so it was almost new smile))

That dualsid looks super useful! Also good to know about retro computer shack, I got my C64 S-Video cable from retro gaming cables (also UK). I just ordered some adapters I'd need to use the RF out so I'll experiment a bit more. To be clear, I'm looking to get video from RF but audio from the A/V port (reason being I want to use a sexy 1980's Watchman for the video - it'll look like absolute crap, but hopefully it'd be good enough to do basic things like select songs).

I was inspired to re-cap my c64c but now it won't boot so I have to figure all that out.. ugh.
EDIT: lol, the video signal from pin 4 of the 8-pin DIN goes "through" the RF box, so when I removed it, I broke continuity. XD
So on that note, don't simply remove the RF box. Just remove the RF components...
http://www.zimmers.net/anonftp/pub/cbm/ … 251696.gif

114

(10 replies, posted in General Discussion)

Anyone have a link to some waveforms in hex, decimal, binary or even octal, text-arrays?
Looking for the basics: tri, saw, squ, sin, etc. And maybe even a few more complex waveforms.
8-, 10-, or 12-bit would be ideal.

115

(9 replies, posted in Commodore Computers)

The C64 has mono audio unless you've installed a second SID or are connecting both L and R to the same audio out pin. But yes, you should be able to get RF at the same time, though I would suggest ripping out the RF box entirely and using composite video only. Those things are so noisy.
Here's a pinout of the jack if you haven't seen it. https://www.c64-wiki.com/wiki/A/V_Jack

Also, sorry to hijak the thread but I thought I would toss in a question for the community, that Nikola may benefit from as well:
What is the best Dual SID board available? And why?

116

(10 replies, posted in General Discussion)

Those Forensics Files polygraph reenactments are more convincing...

117

(9 replies, posted in Nintendo Consoles)

Nice, how is the weight distribution? Might need to find some steel chunks to glue down to the inside to make it more bottom heavy.

118

(10 replies, posted in General Discussion)

This is a notoriously grudgy community. We can make a person sorry pretty easily. How has she not learned?

119

(11 replies, posted in Trading Post)

PM'ing

Good stuff. Really wish it weren't instrumental tho.

122

(0 replies, posted in Trading Post)

Replaced this with a GQ-4x so I don't need it anymore. Works as well as any Willem programmer but can be pretty obnoxious when it comes to a few chips.

Comes with:
Programmer PCB50B
EPROM 16bit adapter
Parallel cable
(No USB or AC cable)


I'll take $40+shipping

123

(7 replies, posted in General Discussion)

i feel old

heart<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3<3v

The GB player contains a CPU AGB A, (B is in the SP) so the pinout should be :

Advance Gameboy CPU Pinouts (CPU AGB)
  1 VDD3  17 D0   33 A0    49 WA4   65 VDD2  81 WD9   97 LDB5   113 CK1
  2 IN35  18 A15  34 /CS   50 WA5   66 WD5   82 WD1   98 LDB4   114 CK2
  3 TP8   19 A14  35 /RD   51 WA6   67 WD13  83 /WOE  99 LDB3   115 VDD2
  4 TP0   20 A13  36 /WR   52 WA7   68 WD6   84 DCK   100 LDB2  116 GND
  5 TP1   21 A12  37 PHI   53 /WLB  69 WD14  85 LP    101 LDB1  117 VDD2
  6 SO1   22 A11  38 VDD35 54 /WUB  70 WD7   86 PS    102 GND   118 VCNT5
  7 SO2   23 A10  39 GND   55 /WWE  71 WD15  87 LDR5  103 VDD3  119 TP9
  8 Vin   24 A9   40 SC    56 WA8   72 WD8   88 LDR4  104 SPL   120 TP6
  9 /RES  25 A8   41 SD    57 WA9   73 WD16  89 LDR3  105 CLS   121 TP5
  10 D7   26 A7   42 SI    58 WA10  74 WA16  90 LDR2  106 SPS   122 TP7
  11 D6   27 A6   43 SO    59 WA11  75 WD12  91 LDR1  107 MOD   123 TP4
  12 D5   28 A5   44 VDD2  60 WA12  76 WD4   92 LDG5  108 REVC  124 /FIQ
  13 D4   29 A4   45 WA0   61 WA13  77 WD11  93 LDG4  109 GNDed 125 /RESET
  14 D3   30 A3   46 WA1   62 WA14  78 WD3   94 LDG3  110 GNDed 126 TP2
  15 D2   31 A2   47 WA2   63 WA15  79 WD10  95 LDG2  111 GNDed 127 TP3
  16 D1   32 A1   48 WA3   64 GND   80 WD2   96 LDG1  112 GNDed 128 GND

SO it looks like pins 6 and 7 are what we're looking for...
I'll pull mine apart and get back with you.

...

So probing around, I have found TP30 and TP31 respectively are places to tap into. The board however doesn't have any passive components, so you'll probably need to add a few caps and resistors from these test points.

I'll look at the GBA's schematic for some nintendo-recommended values.

...

ok, looks like the suggested prosound for an original gba is to connect to R30 and R31, which are 47k resistors, but unlike the DMG and pokect there are no coupling caps to worry about. So I guess you can locate a few 47k resistors and solder them to TP30 and TP31 and just connect that to a headphone jack.

...

sources:
https://dragaosemchama.com/wp-content/u … Manual.pdf
https://chipmusic.org/forums/post/250576/#p250576
https://gbhwdb.gekkio.fi/consoles/gbs/

› Show Spoiler

...

It probably wouldn't hurt to slap a massive electrolytic cap on the power rail near the cpu. 1000uF or so.
Positive pin to vcc and negative pin to gnd.
Click me for fake internet points. big_smile
https://www.facebook.com/OfficialOrgiaMode

126

(4 replies, posted in Nintendo Consoles)

Ugh, interrupts are such a headache for me, but if anyone can help it is nitro. I will be keeping an eye on the progress of this.

127

(4 replies, posted in Nintendo Consoles)

Is your mixer's input MONO only? Is the Little Bits a monosynth?

128

(4 replies, posted in Nintendo Handhelds)

Very nice! The VB has impressive sound capabilities and you're so close to your funding goal! Good luck.