Schematics

[SM7I]

Lacking the schematics. Could you please upload that ?

[SM7I]

Can’t find it ?! Skickat från Outlook för iOS<https://aka.ms/o0ukef>

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[dkm1978]

The scheme is Very Simple.
just look at the program code.

#define cs_pin PB11

#define A0_pin PB12
#define A1_pin PB13
#define A2_pin PB14
#define A3_pin PB15
#define A4_pin PA8

#define D0_pin PB9
#define D1_pin PB8
#define D2_pin PB7
#define D3_pin PB6
#define D4_pin PB4
#define D5_pin PB3
#define D6_pin PA15
#define D7_pin PA10

Sid address pins described as A0..A4
same data bus SID data
d0..d7
remaining pins should be connected as in original C64

in prototype I used a replacement sid circuit in fear of damaging it. so I didn't have to generate a clock signal for sid.

[dkm1978]

due to the current prices of SID 6581/8580 chips, I abandoned the hardware versions in favor of the reSID library