Added more files

README.md

@@ -0,0 +1,5 @@
+# 6502
+
+Various 6502 related pieces, not 100% sure on licensing, but all the bits are based on the Ben Eater youtube series at:
+
+()[https://www.youtube.com/watch?v=LnzuMJLZRdU&list=PLowKtXNTBypFbtuVMUVXNR0z1mu7dp7eH]

build_script

@@ -0,0 +1,3 @@
+
+
+vasm6502_oldstyle -Fbin -dotdir -o OUTPUT.bin INPUT.s

hello-world.s

@@ -9,6 +9,8 @@ RS = %00100000
 
   .org $8000
 
+
+	
 reset:
   lda #%11111111 ; Set all pins on port B to output
   sta DDRB
@@ -17,141 +19,63 @@ reset:
   sta DDRA
 
   lda #%00111000 ; Set 8-bit mode; 2-line display; 5x8 font
-  sta PORTB
-  lda #0         ; Clear RS/RW/E bits
-  sta PORTA
-  lda #E         ; Set E bit to send instruction
-  sta PORTA
-  lda #0         ; Clear RS/RW/E bits
-  sta PORTA
-
+  jsr send_inst
+	
   lda #%00001110 ; Display on; cursor on; blink off
-  sta PORTB
-  lda #0         ; Clear RS/RW/E bits
-  sta PORTA
-  lda #E         ; Set E bit to send instruction
-  sta PORTA
-  lda #0         ; Clear RS/RW/E bits
-  sta PORTA
-
-  lda #%00000110 ; Increment and shift cursor; don't shift display
-  sta PORTB
-  lda #0         ; Clear RS/RW/E bits
-  sta PORTA
-  lda #E         ; Set E bit to send instruction
-  sta PORTA
-  lda #0         ; Clear RS/RW/E bits
-  sta PORTA
-
-  lda #"H"
-  sta PORTB
-  lda #RS         ; Set RS; Clear RW/E bits
-  sta PORTA
-  lda #(RS | E)   ; Set E bit to send instruction
-  sta PORTA
-  lda #RS         ; Clear E bits
-  sta PORTA
-
-  lda #"e"
-  sta PORTB
-  lda #RS         ; Set RS; Clear RW/E bits
-  sta PORTA
-  lda #(RS | E)   ; Set E bit to send instruction
-  sta PORTA
-  lda #RS         ; Clear E bits
-  sta PORTA
-
-  lda #"l"
-  sta PORTB
-  lda #RS         ; Set RS; Clear RW/E bits
-  sta PORTA
-  lda #(RS | E)   ; Set E bit to send instruction
-  sta PORTA
-  lda #RS         ; Clear E bits
-  sta PORTA
-
-  lda #"l"
-  sta PORTB
-  lda #RS         ; Set RS; Clear RW/E bits
-  sta PORTA
-  lda #(RS | E)   ; Set E bit to send instruction
-  sta PORTA
-  lda #RS         ; Clear E bits
-  sta PORTA
-
-  lda #"o"
-  sta PORTB
-  lda #RS         ; Set RS; Clear RW/E bits
-  sta PORTA
-  lda #(RS | E)   ; Set E bit to send instruction
-  sta PORTA
-  lda #RS         ; Clear E bits
-  sta PORTA
-
-  lda #","
-  sta PORTB
-  lda #RS         ; Set RS; Clear RW/E bits
-  sta PORTA
-  lda #(RS | E)   ; Set E bit to send instruction
-  sta PORTA
-  lda #RS         ; Clear E bits
-  sta PORTA
-
-  lda #" "
-  sta PORTB
-  lda #RS         ; Set RS; Clear RW/E bits
-  sta PORTA
-  lda #(RS | E)   ; Set E bit to send instruction
-  sta PORTA
-  lda #RS         ; Clear E bits
-  sta PORTA
+  jsr send_inst
 
-  lda #"w"
-  sta PORTB
-  lda #RS         ; Set RS; Clear RW/E bits
-  sta PORTA
-  lda #(RS | E)   ; Set E bit to send instruction
-  sta PORTA
-  lda #RS         ; Clear E bits
-  sta PORTA
+  lda #%00000001  ; Reset display
+  jsr send_inst
 
-  lda #"o"
-  sta PORTB
-  lda #RS         ; Set RS; Clear RW/E bits
-  sta PORTA
-  lda #(RS | E)   ; Set E bit to send instruction
-  sta PORTA
-  lda #RS         ; Clear E bits
-  sta PORTA
+  lda #%00000110 ; Increment and shift cursor; don't shift display
+  jsr send_inst
+	
+  ldx #0
+print:
+  lda message,x
+  beq loop
+  jsr send_data	
+  inx
+  jmp print
+	
+loop:
+  jmp loop
 
-  lda #"r"
-  sta PORTB
-  lda #RS         ; Set RS; Clear RW/E bits
-  sta PORTA
-  lda #(RS | E)   ; Set E bit to send instruction
-  sta PORTA
-  lda #RS         ; Clear E bits
-  sta PORTA
+message: .asciiz "Hello again,                            Kiddies!"
 
-  lda #"l"
-  sta PORTB
-  lda #RS         ; Set RS; Clear RW/E bits
+lcd_wait:
+  pha
+  lda #%00000000 ; PORT B to INPUT
+  sta DDRB
+lcd_busy:
+  lda #RW
   sta PORTA
-  lda #(RS | E)   ; Set E bit to send instruction
+  lda #(RW | E)
   sta PORTA
-  lda #RS         ; Clear E bits
+  lda PORTB
+  and #%10000000
+  bne lcd_busy
+  
+  lda #RW
   sta PORTA
+  lda #%11111111 ; PORT B to output
+  sta DDRB
+  pla
+  rts
 
-  lda #"d"
+send_inst:	
+  jsr lcd_wait
   sta PORTB
-  lda #RS         ; Set RS; Clear RW/E bits
+  lda #0         ; Clear RS/RW/E bits	
   sta PORTA
-  lda #(RS | E)   ; Set E bit to send instruction
+  lda #E         ; Set E bit to send instruction
   sta PORTA
-  lda #RS         ; Clear E bits
+  lda #0         ; Clear RS/RW/E bits
   sta PORTA
+  rts
 
-  lda #"!"
+send_data:
+  jsr lcd_wait
   sta PORTB
   lda #RS         ; Set RS; Clear RW/E bits
   sta PORTA
@@ -159,9 +83,8 @@ reset:
   sta PORTA
   lda #RS         ; Clear E bits
   sta PORTA
+  rts
 
-loop:
-  jmp loop
 
   .org $fffc
   .word reset

hello-worldBE.s

@@ -0,0 +1,186 @@
+PORTB = $6000
+PORTA = $6001
+DDRB = $6002
+DDRA = $6003
+
+E  = %10000000
+RW = %01000000
+RS = %00100000
+
+  .org $8000
+
+reset:
+  lda #%11111111 ; Set all pins on port B to output
+  sta DDRB
+
+  lda #%11100000 ; Set top 3 pins on port A to output
+  sta DDRA
+
+  lda #%00111000 ; Set 8-bit mode; 2-line display; 5x8 font
+  sta PORTB
+  lda #0         ; Clear RS/RW/E bits
+  sta PORTA
+  lda #E         ; Set E bit to send instruction
+  sta PORTA
+  lda #0         ; Clear RS/RW/E bits
+  sta PORTA
+
+  lda #%00001110 ; Display on; cursor on; blink off
+  sta PORTB
+  lda #0         ; Clear RS/RW/E bits
+  sta PORTA
+  lda #E         ; Set E bit to send instruction
+  sta PORTA
+  lda #0         ; Clear RS/RW/E bits
+  sta PORTA
+
+  lda #%00000110 ; Increment and shift cursor; don't shift display
+  sta PORTB
+  lda #0         ; Clear RS/RW/E bits
+  sta PORTA
+  lda #E         ; Set E bit to send instruction
+  sta PORTA
+  lda #0         ; Clear RS/RW/E bits
+  sta PORTA
+
+  lda #"H"
+  sta PORTB
+  lda #RS         ; Set RS; Clear RW/E bits
+  sta PORTA
+  lda #(RS | E)   ; Set E bit to send instruction
+  sta PORTA
+  lda #RS         ; Clear E bits
+  sta PORTA
+
+  lda #"e"
+  sta PORTB
+  lda #RS         ; Set RS; Clear RW/E bits
+  sta PORTA
+  lda #(RS | E)   ; Set E bit to send instruction
+  sta PORTA
+  lda #RS         ; Clear E bits
+  sta PORTA
+
+  lda #"l"
+  sta PORTB
+  lda #RS         ; Set RS; Clear RW/E bits
+  sta PORTA
+  lda #(RS | E)   ; Set E bit to send instruction
+  sta PORTA
+  lda #RS         ; Clear E bits
+  sta PORTA
+
+  lda #"l"
+  sta PORTB
+  lda #RS         ; Set RS; Clear RW/E bits
+  sta PORTA
+  lda #(RS | E)   ; Set E bit to send instruction
+  sta PORTA
+  lda #RS         ; Clear E bits
+  sta PORTA
+
+  lda #"o"
+  sta PORTB
+  lda #RS         ; Set RS; Clear RW/E bits
+  sta PORTA
+  lda #(RS | E)   ; Set E bit to send instruction
+  sta PORTA
+  lda #RS         ; Clear E bits
+  sta PORTA
+
+  lda #","
+  sta PORTB
+  lda #RS         ; Set RS; Clear RW/E bits
+  sta PORTA
+  lda #(RS | E)   ; Set E bit to send instruction
+  sta PORTA
+  lda #RS         ; Clear E bits
+  sta PORTA
+
+  lda #" "
+  sta PORTB
+  lda #RS         ; Set RS; Clear RW/E bits
+  sta PORTA
+  lda #(RS | E)   ; Set E bit to send instruction
+  sta PORTA
+  lda #RS         ; Clear E bits
+  sta PORTA
+
+  lda #"k"
+  sta PORTB
+  lda #RS         ; Set RS; Clear RW/E bits
+  sta PORTA
+  lda #(RS | E)   ; Set E bit to send instruction
+  sta PORTA
+  lda #RS         ; Clear E bits
+  sta PORTA
+
+  lda #"i"
+  sta PORTB
+  lda #RS         ; Set RS; Clear RW/E bits
+  sta PORTA
+  lda #(RS | E)   ; Set E bit to send instruction
+  sta PORTA
+  lda #RS         ; Clear E bits
+  sta PORTA
+
+  lda #"d"
+  sta PORTB
+  lda #RS         ; Set RS; Clear RW/E bits
+  sta PORTA
+  lda #(RS | E)   ; Set E bit to send instruction
+  sta PORTA
+  lda #RS         ; Clear E bits
+  sta PORTA
+
+  lda #"d"
+  sta PORTB
+  lda #RS         ; Set RS; Clear RW/E bits
+  sta PORTA
+  lda #(RS | E)   ; Set E bit to send instruction
+  sta PORTA
+  lda #RS         ; Clear E bits
+  sta PORTA
+
+  lda #"i"
+  sta PORTB
+  lda #RS         ; Set RS; Clear RW/E bits
+  sta PORTA
+  lda #(RS | E)   ; Set E bit to send instruction
+  sta PORTA
+  lda #RS         ; Clear E bits
+  sta PORTA
+
+  lda #"e"
+  sta PORTB
+  lda #RS         ; Set RS; Clear RW/E bits
+  sta PORTA
+  lda #(RS | E)   ; Set E bit to send instruction
+  sta PORTA
+  lda #RS         ; Clear E bits
+  sta PORTA
+
+  lda #"s"
+  sta PORTB
+  lda #RS         ; Set RS; Clear RW/E bits
+  sta PORTA
+  lda #(RS | E)   ; Set E bit to send instruction
+  sta PORTA
+  lda #RS         ; Clear E bits
+  sta PORTA
+
+  lda #"!"
+  sta PORTB
+  lda #RS         ; Set RS; Clear RW/E bits
+  sta PORTA
+  lda #(RS | E)   ; Set E bit to send instruction
+  sta PORTA
+  lda #RS         ; Clear E bits
+  sta PORTA
+	
+loop:
+  jmp loop
+
+  .org $fffc
+  .word reset
+  .word $0000

upload_script

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+minipro -p AT28C256 -w OUTPUT.bin