Description: 1, programmed to complete the display program requirements in the experimental box BANK2 part digital tube display " 1234" , please read carefully the circuit calculated Segment latch latches and bit-election address, show the program is still in accordance with the " send segment send Choice, delay, blanking " Cross policy control, but the control of different methods, LE port latch is controlled by the address bus. 2, according to the the experimental box BANK2 part of the circuit, completed by the 8255 I/O expansion operation, then eight light-emitting diode 8255A port on the PA, and completed on a light water program. 3, according to the the experimental box BANK2 part of the circuit completed by the 8255 I/O expansion operation, the 8255A PB port on the external of the DIP switch status display on the PA port of the light-emitting diode, when the switch is turned on light-emitting diode light, the switch is closed glow diode exterminate. 4, complete the on-chip RAM
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program\8255PB\8255PB
.......\......\8255PB.hex
.......\......\8255PB.lnp
.......\......\8255PB.M51
.......\......\8255PB.Opt
.......\......\8255PB.plg
.......\......\8255PB.Uv2
.......\......\8255PB_Opt.Bak
.......\......\8255PB_Uv2.Bak
.......\......\main.asm
.......\......\main.LST
.......\......\main.OBJ
.......\8255PB
.......\Display\BANK2_DISP
.......\.......\BANK2_DISP.hex
.......\.......\BANK2_DISP.lnp
.......\.......\BANK2_DISP.M51
.......\.......\BANK2_DISP.Opt
.......\.......\BANK2_DISP.plg
.......\.......\BANK2_DISP.Uv2
.......\.......\BANK2_DISP_Opt.Bak
.......\.......\BANK2_DISP_Uv2.Bak
.......\.......\Display.asm
.......\.......\Display.LST
.......\.......\Display.OBJ
.......\Display
.......\RAM_WR
program
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