mirror of https://github.com/zxdos/zxuno.git
145 lines
5.2 KiB
NASM
145 lines
5.2 KiB
NASM
; back32m.asm - creates a file, in the root directory of the microSD
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; card, with the contents of a 32 Meg SPI Flash memory.
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;
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; It must be run while using a "root" mode ROM. After finishing it's
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; execution, you must execute the command .ls to finish recording the
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; cache on the microSD card. If not, the length of the file will be
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; wrongly set to 0.
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;
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; Copyright (C) 2019, 2021 Antonio Villena
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; Contributors:
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; 2021 Ivan Tatarinov <ivan-tat@ya.ru>
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; 2021 kounch
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;
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; This program is free software: you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation, version 3.
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;
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; This program is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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;
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; You should have received a copy of the GNU General Public License
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; along with this program. If not, see <https://www.gnu.org/licenses/>.
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;
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; Compatible compilers:
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; SjAsmPlus, <https://github.com/z00m128/sjasmplus>
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include back32m.def
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include zxuno.def
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include esxdos.def
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define VERSION "0.1.2"
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define FLASH_FILE "FLASH_32.ZX", extension
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org $2000 ; comienzo de la ejecución de los comandos ESXDOS
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call wrear0
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dec b
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out (c), 0
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inc b
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in f, (c)
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jp p, Nonlock
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call Print
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dz 'ROM not rooted'
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ret
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Nonlock wreg flash_cs, 0 ; activamos spi, enviando un 0
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wreg flash_spi, $9f ; jedec id
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in a, (c)
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in a, (c)
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in a, (c)
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in a, (c)
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wreg flash_cs, 1 ; desactivamos spi, enviando un 1
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sub $19
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jr z, Goodflsh
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call Print
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dz 'Incorrect flash IC'
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ret
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Goodflsh ld a, scandbl_ctrl
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dec b
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out (c), a
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inc b
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in a, (c)
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and $3f
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ld (normal+1), a
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or $c0
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out (c), a
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call init
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ld bc, zxuno_port
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ld a, scandbl_ctrl
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out (c), a
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inc b
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normal ld a, 0
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out (c), a
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ret
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init xor a
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esxdos M_GETSETDRV ; A = unidad actual
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jr nc, SDCard
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call Print
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dz 'SD card not inserted'
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ret
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SDCard ld b, FA_WRITE | FA_OPEN_AL ; B = modo de apertura
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ld hl, FileName ; HL = Puntero al nombre del fichero (ASCIIZ)
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esxdos F_OPEN
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ld (handle+1), a
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jr nc, FileFound
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call Print
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dz 'Cannot open ', FLASH_FILE
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ret
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FileFound call Print
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dz 'Backing up ', FLASH_FILE, ' to SD', 13
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call write16m
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wreg flash_cs, 0 ; activamos spi, enviando un 0
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wreg flash_spi, 6 ; envío write enable
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wreg flash_cs, 1 ; desactivamos spi, enviando un 1
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wreg flash_cs, 0 ; activamos spi, enviando un 0
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wreg flash_spi, $c5 ; envío wrear
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ld l, 1
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out (c), l
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wreg flash_cs, 1 ; desactivamos spi, enviando un 1
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call write16m
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esxdos F_CLOSE
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call Print
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dz 13, 'Backup complete'
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wrear0 wreg flash_cs, 0 ; activamos spi, enviando un 0
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wreg flash_spi, 6 ; envío write enable
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wreg flash_cs, 1 ; desactivamos spi, enviando un 1
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wreg flash_cs, 0 ; activamos spi, enviando un 0
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wreg flash_spi, $c5 ; envío wrear
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out (c), 0
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wreg flash_cs, 1 ; desactivamos spi, enviando un 1
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ret
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write16m ld hl, $0000
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Bucle push hl
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ld de, $8000
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ld a, $40
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call rdflsh
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add hl, hl
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add hl, hl
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ld a, h
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and $3f
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jr nz, punto
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ld a, 'o'
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rst $10
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punto ld hl, $8000
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ld bc, $4000
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handle ld a, 0
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esxdos F_WRITE
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pop hl
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jr nc, WriteOK
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call Print
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dz 'Write Error'
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ret
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WriteOK ld de, $0040
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adc hl, de
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jr nc, Bucle
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ret
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include Print.inc
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include rdflsh.inc
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include rst28.inc
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FileName dz FLASH_FILE
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