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https://github.com/a2stuff/prodos-path.git
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4bdb0808a2
This is used by the GS/OS Finder to conceal FINDER.DATA files. Documented in "Exploring GS/OS and ProDOS 8" by Gary B. Little. BASIC.SYSTEM's CAT/CATALOG are unaware of this, so the files are still listed. Note that the command is named "UNHIDE" rather than "SHOW" as that sounds like a command to display file contents or something.
69 lines
1.6 KiB
ArmAsm
69 lines
1.6 KiB
ArmAsm
;;; ============================================================
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;;;
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;;; UNHIDE - Mark a file as not invisible
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;;;
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;;; Usage: UNHIDE filename[,S#][,D#]
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;;;
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;;; * filename can be relative or absolute path
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;;;
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;;; ============================================================
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.include "apple2.inc"
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.include "more_apple2.inc"
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.include "prodos.inc"
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;;; ============================================================
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.org $4000
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;; NOTE: Assumes XLEN is set by PATH
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;; Point BI's parser at the command execution routine.
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lda #<execute
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sta XTRNADDR
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lda #>execute
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sta XTRNADDR+1
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;; Mark command as external (zero).
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lda #0
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sta XCNUM
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;; Set accepted parameter flags
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;; Filename
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lda #PBitsFlags::FN1
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sta PBITS
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;; Slot & Drive handling
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lda #PBitsFlags::SD
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sta PBITS+1
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clc ; Success (so far)
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rts1: rts ; Return to BASIC.SYSTEM
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;;; ============================================================
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execute:
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;; Get the existing file info
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lda #$A
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sta SSGINFO
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lda #GET_FILE_INFO
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jsr GOSYSTEM
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bcs rts1
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;;; --------------------------------------------------
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;; Set invisible bit
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lda FIACESS
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and #<(~ACCESS_I)
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sta FIACESS
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;; Set new file info
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lda #$7
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sta SSGINFO
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lda #SET_FILE_INFO
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jmp GOSYSTEM
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;;; --------------------------------------------------
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