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sbc65

Software for the sbc65 single board computer

  • os - Minimal monitor & ehbasic build
  • via_test - Outputs a simple test partern onto the VIA I/O
  • acia_test - Repeatidly sends a single character over the UART port from the ACIA

Dependencies

Bill of Materials

Part Code Description Qty
CY62256NLL-70PXC SRAM 256Kb 70ns 32K x 8 1
AT28C256-15PU EEPROM 256K 32K x 8 150ns 1
W65C02S6TPG-14 MPU 8-bit Microprocessor 1
W65C22S6TPG-14 VIA Versatile Interface Adapter 1
R65C51P2 ACIA Specialised Asynch Communication Interface Adapter 1
CD74HC132E Logic Gates Quad 2-In Schmit Trigger 1
MXO45-3C-1M0000 1MHZ Oscillator DIP-14 1
DS1813-10+ Supervisory Circuits 5V EconoReset w/Pushbutton 1
N/A 1.8942MHz Crystal 1
CP2102 USB to UART Board 1
TXB0104 Voltage Levels 4-Bit Bi-directional V-Level Translator 1
100nf 100nf Ceramic Capacitor 16
10uf 10uf Capacitor 2
22pf 22pf Ceramic Capacitor 1
3K3 3.3K ohm resistors 5
N/A 14 pin DIP Socket 2
N/A 40 pin DIP Socket 2
N/A 28 pin DIP Socket 3

Please note that while WDC also make a version of the 65C51 code here is optimised to work for the Rockwell version as the WDC has a number of bugs that make it unusable.

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6502 enhanced BASIC unmodified source

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  • Assembly 90.8%
  • KiCad Layout 8.9%
  • Makefile 0.3%