FTP://FTP.FUNET.FI/PUB/CBM/CROSSPLATFORM/TRANSFER/c2n232/HARDWARE/

c2n232 IS A cOMMODORE c2n CASSETTE DRIVE (DATASSETTE) EMULATOR WITH AN rs-232 INTERFACE. iT WAS DESIGNED BY mARKO m{$e4}KEL{$e4} (MSMAKELA@NIC.FUNET.FI).
tHE HARDWARE DESIGN (MADE WITH THE eAGLE LAYOUT EDITOR BY cADsOFT) IS BASED ON TWO INTEGRATED CIRCUITS: AN aTMEL at90s2313 MICROCONTROLLER AND A mAXIM max232 LINE DRIVER.
tHESE FILES MAY BE USED ACCORDING TO THE TERMS OF THE gnu gENERAL pUBLIC lICENSE. eSSENTIALLY, YOU MAY MAKE MONEY AND NEED NOT PAY ANY ROYALTIES TO ANYONE, AND IF YOU MODIFY THE DESIGN, YOU MUST MAKE THE MODIFICATIONS AVAILABLE ON THE SAME CONDITIONS.

fILES

DIL.BRD 2001-09-12 143476
sINGLE-SIDED CIRCUIT BOARD FOR DUAL-IN-LINE PACKAGED CHIPS (at90s2313-dip20 AND max232-dip16) IN cADsOFT eAGLE FORMAT.
DIL.SCH 2001-09-12 159282
sCHEMATIC DIAGRAM CORRESPONDING TO DIL.BRD. tHIS IS THE ORIGINAL PROTOTYPE.
SMD-ASSY-BOTTOM.PNG 2001-12-29 4637
tHE COMPONENTS ON THE BOTTOM SIDE OF THE BOARD. tHE db9f CONNECTOR FOR rs-232 IS ON THE LEFT, AND THE cOMMODORE CASSETTE PORT CONNECTOR IS ON THE RIGHT. (tHE LATTER IS NOT CONNECTED TO THIS SIDE OF THE BOARD.) tHE SURFACE-MOUNTED PARTS FROM THE LEFT TO THE RIGHT ARE: max232cse (ic2 IN so16 CASE), TWO 470 Nf CAPACITORS (c5 AND c1 IN 0805 CASE), AN 8 mhZ CRYSTAL (AT LEAST ma505 AND sm49 CASES SHOULD FIT), A 470 Nf CAPACITOR (c2 IN 0805 CASE), AND TWO 33 Pf CAPACITORS (c6 AND c7 IN 0805 CASE) FOR THE CRYSTAL CIRCUIT.
SMD-ASSY-TOP.PNG 2001-12-29 6511
tHE COMPONENTS ON THE TOP SIDE OF THE BOARD. tHE db9f CONNECTOR IS ON THE RIGHT, AND THE cOMMODORE CASSETTE PORT CONNECTOR IS ON THE LEFT. fOR THE CASSETTE PORT CONNECTOR, YOU CAN USE EITHER A 1W6 CARD EDGE CONNECTOR WITH 3.96 MM SPACING, OR THE TOP OR BOTTOM SIDE OF A 2W6 CARD EDGE CONNECTOR.
tHE SURFACE-MOUNTED PARTS FROM THE RIGHT TO THE LEFT ARE: TWO 470 Nf CAPACITORS (c3 AND c4 IN 0805 CASE), at90s2313 (ic1 IN so20l CASE), AND TWO 4K7 RESISTORS (r1 AND r2 IN 0805 CASE).
tHE PINHEAD AREA jp2 IS FOR MOUNTING SOME WIRES FOR EMULATING THE cOMMODORE SERIAL BUS (WHICH IS NOT YET SUPPORTED BY THE FIRMWARE).
tHE PINHEAD AREA jp1 IS A PROGRAMMING CONNECTOR, WHOSE PINOUT DIFFERS FROM THE aTMEL RECOMMENDATION. tHE PINS FROM LEFT TO RIGHT, TOP TO BOTTOM ARE: sck, miso, mosi, gnd, vcc AND reset.
SMD-BOTTOM.PNG 2001-12-27 2017
a 300 DOTS PER INCH MONOCHROME BITMAP IMAGE OF THE SOLDER SIDE OF THE CIRCUIT BOARD FOR THE SURFACE MOUNTED DEVICES at90s2313-so20l AND max232-so16.
SMD-SCHEMATIC.PNG 2001-12-20 17346
aN BITMAP IMAGE OF THE SCHEMATIC DIAGRAM FOR SURFACE MOUNTED DEVICES.
SMD-TOP.PNG 2001-12-27 2732
a 300 DOTS PER INCH MONOCHROME BITMAP IMAGE OF THE COMPONENT SIDE OF THE CIRCUIT BOARD FOR THE SURFACE MOUNTED DEVICES at90s2313-so20l AND max232-so16.
SMD.BRD 2001-12-25 135069
cIRCUIT BOARD FOR THE SURFACE MOUNTED DEVICES at90s2313-so20l AND max232-so16 IN cADsOFT eAGLE FORMAT.
SMD.SCH 2001-12-20 103869
sCHEMATIC DIAGRAM CORRESPONDING TO SMD.BRD.
SMDCR-UPGRADE.JPG 2002-04-19 40131
a PICTURE OF "SMD.BRD" MODIFIED TO BE COMPATIBLE WITH THE PROGRAMMING INTERFACE OF "SMDCR.BRD".
SMDCR-UPGRADE.TXT 2002-04-02 885
iNSTRUCTIONS ON CONVERTING THE PROGRAMMING INTERFACE OF "SMD.BRD" AND "SMDL.BRD" TO BE COMPATIBLE WITH THE ONE IN "SMDCR.BRD".
SMDCR.BRD 2002-04-02 132387
cOST REDUCED SURFACE MOUNTED DESIGN OF THE BOARD. tHERE ARE NO RESISTORS, AND ONLY ONE TYPE OF CAPACITORS ARE USED. tHE ORIGINALLY PLANNED 470 Nf CAPACITORS HAVE BEEN REPLACED WITH 100 Nf. tHE MICROCONTROLLER IS PROGRAMMED VIA THE rs-232 INTERFACE.
SMDCR.SCH 2002-04-02 86211
sCHEMATIC DIAGRAM CORRESPONDING TO SMDCR.BRD.
SMDL.BRD 2001-11-07 135515
cIRCUIT BOARD FOR THE SURFACE MOUNTED DEVICES at90s2313-so20l AND max232-so16l IN cADsOFT eAGLE FORMAT. tHE so16l PACKAGE IS WIDER THAN THE so16 PACKAGE USED IN THE FINAL VERSION. tHUS, THIS BOARD IS A LITTLE LONGER THAN THE FINAL VERSION, AND IT HAS ONE VIA (CONDUCTING HOLE) LESS.
SMDL.SCH 2001-11-07 101456
sCHEMATIC DIAGRAM CORRESPONDING TO SMDL.BRD. tHIS IS ELECTRICALLY EQUIVALENT TO SMD.SCH.

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