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collapseos/recipes/rc2014/sdcard/glue.asm

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2019-05-08 05:26:52 +10:00
; classic RC2014 setup (8K ROM + 32K RAM) and a stock Serial I/O module
; The RAM module is selected on A15, so it has the range 0x8000-0xffff
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.equ RAMSTART 0x8000
.equ RAMEND 0xffff
.equ PGM_CODEADDR 0x9000
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.equ ACIA_CTL 0x80 ; Control and status. RS off.
.equ ACIA_IO 0x81 ; Transmit. RS on.
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jp init ; 3 bytes
; *** Jump Table ***
jp printstr
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jp sdcWaitResp
jp sdcCmd
jp sdcCmdR1
jp sdcCmdR7
jp sdcSendRecv
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; interrupt hook
.fill 0x38-$
jp aciaInt
.inc "err.h"
.inc "ascii.h"
.inc "blkdev.h"
.inc "fs.h"
.inc "core.asm"
.inc "str.asm"
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.equ ACIA_RAMSTART RAMSTART
.inc "acia.asm"
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.equ BLOCKDEV_RAMSTART ACIA_RAMEND
.equ BLOCKDEV_COUNT 2
.inc "blockdev.asm"
; List of devices
.dw sdcGetB, sdcPutB
.dw blk2GetB, blk2PutB
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.equ STDIO_RAMSTART BLOCKDEV_RAMEND
.equ STDIO_GETC aciaGetC
.equ STDIO_PUTC aciaPutC
.inc "stdio.asm"
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.equ FS_RAMSTART STDIO_RAMEND
.equ FS_HANDLE_COUNT 1
.inc "fs.asm"
; *** Shell ***
.inc "lib/util.asm"
.inc "lib/parse.asm"
.inc "lib/args.asm"
.inc "lib/stdio.asm"
.equ SHELL_RAMSTART FS_RAMEND
.equ SHELL_EXTRA_CMD_COUNT 11
.inc "shell/main.asm"
.dw sdcInitializeCmd, sdcFlushCmd
.dw blkBselCmd, blkSeekCmd, blkLoadCmd, blkSaveCmd
.dw fsOnCmd, flsCmd, fnewCmd, fdelCmd, fopnCmd
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.inc "shell/blkdev.asm"
.inc "shell/fs.asm"
.equ PGM_RAMSTART SHELL_RAMEND
.inc "shell/pgm.asm"
.equ SDC_RAMSTART PGM_RAMEND
.equ SDC_PORT_CSHIGH 6
.equ SDC_PORT_CSLOW 5
.equ SDC_PORT_SPI 4
.inc "sdc.asm"
init:
di
; setup stack
ld hl, RAMEND
ld sp, hl
im 1
call aciaInit
call fsInit
call shellInit
ld hl, pgmShellHook
ld (SHELL_CMDHOOK), hl
xor a
ld de, BLOCKDEV_SEL
call blkSel
ei
jp shellLoop
; *** blkdev 2: file handle 0 ***
blk2GetB:
ld ix, FS_HANDLES
jp fsGetB
blk2PutB:
ld ix, FS_HANDLES
jp fsPutB