penguin86/pato-z80-home-computer
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Code clean

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Daniele Verducci su MatissePenguin 2020-12-09 20:09:52 +01:00
parent c9274fac4d
commit 72e4bee080
2 changed files with 6 additions and 6 deletions
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10
assembly/bios/drivers/arduino_terminal.asm
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@ -2,7 +2,7 @@
; @author Daniele Verducci ; @author Daniele Verducci
; config (IO port 0) ; config (IO port 0)
DATA_REG: EQU IO_0 TERM_DATA_REG: EQU IO_0
; variables ; variables
TERM_VAR_SPACE: EQU DRV_VAR_SPACE + 128 TERM_VAR_SPACE: EQU DRV_VAR_SPACE + 128
@ -16,20 +16,20 @@ Term_print:
ld a, (bc) ; bc is the pointer to passed string's first char ld a, (bc) ; bc is the pointer to passed string's first char
cp 0 ; compare A content with 0 (subtract 0 from value and set zero flag Z if result is 0) cp 0 ; compare A content with 0 (subtract 0 from value and set zero flag Z if result is 0)
ret z ; if prev compare is true (Z flag set), string is finished, return ret z ; if prev compare is true (Z flag set), string is finished, return
out (DATA_REG),a ; output char out (TERM_DATA_REG),a ; output char
inc bc ; increment bc to move to next char inc bc ; increment bc to move to next char
jp Term_print jp Term_print
; Writes a single character ; Writes a single character
; @param A Value of character to print ; @param A Value of character to print
Term_printc: Term_printc:
out (DATA_REG),a out (TERM_DATA_REG),a
ret ret
; Reads a single character ; Reads a single character
; @return A The read character ; @return A The read character
Term_readc: Term_readc:
in a, (DATA_REG) ; reads a character in a, (TERM_DATA_REG) ; reads a character
add a, 0 add a, 0
jp z, Term_readc ; if char is 0 (NULL), ignores it and waits for another character jp z, Term_readc ; if char is 0 (NULL), ignores it and waits for another character
ret ; if not NULL, returns it in the a register ret ; if not NULL, returns it in the a register
@ -38,7 +38,7 @@ Term_readc:
; @return BC The pointer to a null-terminated read string ; @return BC The pointer to a null-terminated read string
Term_readline: Term_readline:
ld bc, incoming_string ; this array will contain read string ld bc, incoming_string ; this array will contain read string
in a, (DATA_REG) ; reads a character in a, (TERM_DATA_REG) ; reads a character
; if char is 0 (ascii NULL), ignore it ; if char is 0 (ascii NULL), ignore it
add a, 0 add a, 0
jp z, Term_readline ; if 0 (= ascii NULL), ignores it and waits for another character jp z, Term_readline ; if 0 (= ascii NULL), ignores it and waits for another character

2
assembly/bios/libs/time.asm
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@ -2,7 +2,7 @@
; @author Daniele Verducci ; @author Daniele Verducci
; Duration in cpu cycles / 55 (change these values based on CPU frequency) ; Duration in cpu cycles / 55 (change these values based on CPU frequency)
TIME_DUR_SECOND: EQU (2545) TIME_DUR_SECOND: EQU 2545
TIME_DUR_MILLIS: EQU 3 TIME_DUR_MILLIS: EQU 3
; Wait bc * 55 states ; Wait bc * 55 states