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Code Issues Releases Wiki Activity

Code consolidation

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This commit is contained in:
Virgil Dupras 2019-04-16 08:35:44 -04:00
parent ce49fc15d0
commit af13b0bd00
1 changed files with 20 additions and 25 deletions
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45
parts/shell.asm
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@ -127,6 +127,18 @@ printcrlf:
SHELL_PUTC SHELL_PUTC
ret ret
; Print the hex char in A
printHex:
push af
push hl
ld hl, SHELL_HEX_FMT
call fmtHexPair
ld a, 2
call printnstr
pop hl
pop af
ret
; Parse command (null terminated) at HL and calls it ; Parse command (null terminated) at HL and calls it
shellParse: shellParse:
push af push af
@ -204,11 +216,7 @@ shellPrintErr:
ld hl, .str ld hl, .str
call printstr call printstr
call printHex
ld hl, SHELL_HEX_FMT
call fmtHexPair
ld a, 2
call printnstr
call printcrlf call printcrlf
pop hl pop hl
@ -334,31 +342,23 @@ shellParseArgs:
shellMptrCmd: shellMptrCmd:
.db "mptr", 0b011, 0b001, 0 .db "mptr", 0b011, 0b001, 0
shellMptr: shellMptr:
push de
push hl push hl
; z80 is little endian. in a "ld hl, (nn)" op, L is loaded from the ; reminder: z80 is little-endian
; first byte, H is loaded from the second.
ld a, (hl) ld a, (hl)
ld (SHELL_MEM_PTR+1), a ld (SHELL_MEM_PTR+1), a
inc hl inc hl
ld a, (hl) ld a, (hl)
ld (SHELL_MEM_PTR), a ld (SHELL_MEM_PTR), a
ld de, (SHELL_MEM_PTR) ld hl, (SHELL_MEM_PTR)
ld hl, SHELL_HEX_FMT ld a, h
ld a, d call printHex
call fmtHexPair ld a, l
ld a, 2 call printHex
call printnstr
ld a, e
call fmtHexPair
ld a, 2
call printnstr
call printcrlf call printcrlf
pop hl pop hl
pop de
xor a xor a
ret ret
@ -382,12 +382,7 @@ shellPeek:
ld b, a ld b, a
ld hl, (SHELL_MEM_PTR) ld hl, (SHELL_MEM_PTR)
.loop: ld a, (hl) .loop: ld a, (hl)
ex hl, de call printHex
ld hl, SHELL_HEX_FMT
call fmtHexPair
ld a, 2
call printnstr
ex hl, de
inc hl inc hl
djnz .loop djnz .loop
call printcrlf call printcrlf