fat16 working
This commit is contained in:
Dennis Gunia
@@ -1,170 +1,107 @@
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.include "extern_symbols.s" ;include monitor symbols.
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org 0x8000
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org 0x6000
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sel_dsk:
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call ideif_drv_sel
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call fat_print_dbg
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ret
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org 0x8010
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call fat_print_dbg
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ret
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org 0x8020
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call fat_print_directory
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ret
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org 0x8030
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ld hl,0x0006
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ld (MEM_FAT_OF0_CCLUST),hl
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call fat_getfatsec
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ret
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fat_print_dbg:
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call PRINTINLINE
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db 10,13,"PTR.MEM_IDE_POINTER: 0x",0
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ld ix,MEM_IDE_POINTER
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call print_32_hex
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call PRINTINLINE
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db " | PTR.MEM_IDE_PARTITION: 0x",0
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ld ix,MEM_IDE_PARTITION
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call print_32_hex
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call PRINTINLINE
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db 10,13,"PTR.MEM_FAT_TMPPOINTER: 0x",0
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ld ix,MEM_FAT_TMPPOINTER
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call print_32_hex
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call PRINTINLINE
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db " | PTR.MEM_FAT_TMPPOINTER1: 0x",0
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ld ix,MEM_FAT_TMPPOINTER1
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call print_32_hex
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call PRINTINLINE
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db 10,13,"VAL.MEM_FAT_RESERVED: 0x",0
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ld ix,MEM_FAT_RESERVED
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call print_16_hex
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call PRINTINLINE
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db " | VAL.MEM_FAT_AMOUNT: 0x",0
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ld a,(MEM_FAT_AMOUNT)
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call print_a_hex
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call PRINTINLINE
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db 10,13,"VAL.MEM_FAT_SECTORS: 0x",0
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ld ix,MEM_FAT_SECTORS
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call print_16_hex
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call PRINTINLINE
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db " | VAL.MEM_FAT_COUNT1: 0x",0
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ld a,(MEM_FAT_COUNT1)
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call print_a_hex
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call PRINTINLINE
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db 10,13,"VAL.MEM_FAT_OF0_CCLUST: 0x",0
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ld ix,MEM_FAT_OF0_CCLUST
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call print_16_hex
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call PRINTINLINE
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db " | PTR.MEM_FAT_OF0_FATSEC: 0x",0
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ld ix,MEM_FAT_OF0_FATSEC
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call print_32_hex
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call PRINTINLINE
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db 10,13,"VAL.MEM_FAT_OF0_DATSEC: 0x",0
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ld ix,MEM_FAT_OF0_DATSEC
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call print_32_hex
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call PRINTINLINE
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db " | PTR.MEM_FAT_OF0_DATREM: 0x",0
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ld ix,MEM_FAT_OF0_DATREM
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call print_16_hex
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call print_newLine
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ret
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print_32_hex:
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ld a,(ix+3)
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call print_a_hex
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ld a,(ix+2)
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call print_a_hex
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ld a,(ix+1)
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call print_a_hex
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ld a,(ix+0)
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call print_a_hex
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ret
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print_16_hex:
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ld a,(ix+1)
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call print_a_hex
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ld a,(ix+0)
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call print_a_hex
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ret
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; a contains drive to select
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; populate fs vars as well
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ideif_drv_sel:
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ld (MEM_IDE_SELECTED),a
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push af
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call ideif_get_drv_pointer ;test if drive is marked as available
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ld a,(ix+0)
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MEM_FAT_EXEC_CURR .equ var_scratch+10
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MEM_FAT_EXEC_COUNT .equ var_scratch+12
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MEM_FAT_EXEC_START .equ var_scratch+14
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fat_exec:
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ld de,[var_input+6] ;prepare input like to mimic rom behaviour
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push de
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;DE has pointer to arguments
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call fat_openfile
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or a
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jp nz, _ideif_drv_sel_fail ;if not-> fail
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call fat_get_root_table ;else get root table
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;backup tmp pointer
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ld hl,(MEM_IDE_POINTER)
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ld de,(MEM_IDE_PARTITION) ;use MEM_IDE_PARTITION to backup the pointer
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call fat_copy_lba_pointer
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ld hl,[_ideif_drv_sel_pstr] ;print success message
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jp nz, _fat_exec_notfound ;if not found, abort
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;call fat_print_dbg
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;load header
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ld de, MEM_IDE_BUFFER
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call fat_readfilesec
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;ld hl, MEM_IDE_BUFFER ;print sector
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;ld b,0x20
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;call dump_pretty
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ld a,(MEM_IDE_BUFFER)
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cp 0xC3
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jp nz, _fat_exec_notexec
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call PRINTINLINE
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db 10,13,"Loading ",0
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ld hl,[var_input+6]
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call print_str
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pop af
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add 69
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call print_char
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ld hl,[_ideif_drv_sel_sstr0]
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call print_str
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ret
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_ideif_drv_sel_fail:
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ld hl,[_ideif_drv_sel_pstr]
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call print_str
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pop af
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add 69
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call print_char
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ld hl,[_ideif_drv_sel_fstr0]
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call print_str
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LD DE,0x20
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LD BC,0x70
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CALL beep
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call PRINTINLINE
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db " to 0x",0
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;get start address
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ld bc,(MEM_IDE_BUFFER + 10)
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ld a,b
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call print_a_hex
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ld a,c
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call print_a_hex
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call PRINTINLINE
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db " ... ",0
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;bc has start addr
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ld (MEM_FAT_EXEC_CURR),bc
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ld (MEM_FAT_EXEC_START),bc
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;get amount of sectors to load
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ld hl,(MEM_IDE_BUFFER + 14)
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ld l,h
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srl l
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ld h,0 ;divide by 512
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inc hl ;increment because first sector is always loaded
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; hl contains sector count
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ld (MEM_FAT_EXEC_COUNT), hl
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pop de ; restore filename
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call fat_openfile ;reset file information
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;start reading
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_fat_exec_readloop1:
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ld de,(MEM_FAT_EXEC_CURR)
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call fat_readfilesec
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ld hl,(MEM_FAT_EXEC_CURR)
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ld de,512
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add hl,de
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ld (MEM_FAT_EXEC_CURR),hl
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ld hl,(MEM_FAT_EXEC_COUNT)
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dec hl
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ld (MEM_FAT_EXEC_COUNT),hl
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ld a,h
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or l
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jr z, _fat_exec_read_done
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jr _fat_exec_readloop1
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_fat_exec_read_done:
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call PRINTINLINE
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db "Load complete!",10,13,0
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ld hl,(MEM_FAT_EXEC_START)
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jp (hl)
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_fat_exec_notfound:
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call PRINTINLINE
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db 10,13,"File not found!",10,13,0
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ret
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_ideif_drv_sel_pstr:
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db 10,13,"Drive ",0
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_ideif_drv_sel_fstr0:
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db ": not ready",10,13,0
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_ideif_drv_sel_sstr0:
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db ": selected",10,13,0
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_ideif_drv_sel_syn:
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db 10,13,"Invalid drive letter",10,13,0
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.include "fat16.s" ;include monitor symbols.
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.include "fat16_file.s" ;include monitor symbols.
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_fat_exec_notexec:
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call PRINTINLINE
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db 10,13,"File is not an executable!",10,13,0
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ret
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;------------------------------------------------------------------------------
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; PRINTINLINE
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;
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; String output function
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;
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; Prints in-line data (bytes immediately following the PRINTINLINE call)
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; until a string terminator is encountered (0 - null char).
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;------------------------------------------------------------------------------
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PRINTINLINE:
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EX (SP),HL ; PUSH HL and put RET ADDress into HL
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PUSH AF
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PUSH BC
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nxtILC:
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LD A,(HL)
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CP 0
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JR Z,endPrint
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CALL print_char
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INC HL
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JR nxtILC
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endPrint:
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INC HL ; Get past "null" terminator
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POP BC
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POP AF
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EX (SP),HL ; PUSH new RET ADDress on stack and restore HL
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RET
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_test_loop:
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call fat_readfilesec
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push af
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ld hl, MEM_IDE_BUFFER ;print sector
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ld b,0x20
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call dump_pretty
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;call PRINTINLINE
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;db 10,13,"SECREAD",10,13,0
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pop af
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or a
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jp z, _test_loop
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;check if end of file
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ret
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