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https://github.com/SEPPDROID/DR-DOS-OpenDOS.git
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135 lines
4.1 KiB
Plaintext
135 lines
4.1 KiB
Plaintext
; File : $RH.EQU$
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;
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; Description :
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;
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; Original Author : DIGITAL RESEARCH
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;
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; Last Edited By : $CALDERA$
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;
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;-----------------------------------------------------------------------;
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; Copyright Work of Caldera, Inc. All Rights Reserved.
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;
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; THIS WORK IS A COPYRIGHT WORK AND CONTAINS CONFIDENTIAL,
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; PROPRIETARY AND TRADE SECRET INFORMATION OF CALDERA, INC.
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; ACCESS TO THIS WORK IS RESTRICTED TO (I) CALDERA, INC. EMPLOYEES
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; WHO HAVE A NEED TO KNOW TO PERFORM TASKS WITHIN THE SCOPE OF
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; THEIR ASSIGNMENTS AND (II) ENTITIES OTHER THAN CALDERA, INC. WHO
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; HAVE ACCEPTED THE CALDERA OPENDOS SOURCE LICENSE OR OTHER CALDERA LICENSE
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; AGREEMENTS. EXCEPT UNDER THE EXPRESS TERMS OF THE CALDERA LICENSE
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; AGREEMENT NO PART OF THIS WORK MAY BE USED, PRACTICED, PERFORMED,
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; COPIED, DISTRIBUTED, REVISED, MODIFIED, TRANSLATED, ABRIDGED,
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; CONDENSED, EXPANDED, COLLECTED, COMPILED, LINKED, RECAST,
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; TRANSFORMED OR ADAPTED WITHOUT THE PRIOR WRITTEN CONSENT OF
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; CALDERA, INC. ANY USE OR EXPLOITATION OF THIS WORK WITHOUT
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; AUTHORIZATION COULD SUBJECT THE PERPETRATOR TO CRIMINAL AND
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; CIVIL LIABILITY.
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;-----------------------------------------------------------------------;
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;
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; *** Current Edit History ***
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; *** End of Current Edit History ***
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;
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; $Log$
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;
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; ENDLOG
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;
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; Request command equates
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CMD_INIT equ 0 ; Initialize the Device Driver
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CMD_MEDIA_CHECK equ 1 ; Request Media Check
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CMD_BUILD_BPB equ 2 ; Build Drive BPB
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CMD_INPUT_IOCTL equ 3 ; IOCTL input
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CMD_INPUT equ 4 ; Input
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CMD_INPUT_NOWAIT equ 5 ; Non destructive input no wait
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CMD_INPUT_STATUS equ 6 ; Input status
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CMD_INPUT_FLUSH equ 7 ; Input flush
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CMD_OUTPUT equ 8 ; Output
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CMD_OUTPUT_VERIFY equ 9 ; Output with verify
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CMD_OUTPUT_STATUS equ 10 ; Output status
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CMD_OUTPUT_FLUSH equ 11 ; Output flush
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CMD_OUTPUT_IOCTL equ 12 ; IOCTL output
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CMD_DEVICE_OPEN equ 13 ; Device OPEN
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CMD_DEVICE_CLOSE equ 14 ; Device CLOSE
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CMD_FIXED_MEDIA equ 15 ; Removeable Media Check
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CMD_GENERIC_IOCTL equ 19 ; Generic IOCTL
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CMD_GET_DEVICE equ 23 ; Get the Logical Device
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CMD_SET_DEVICE equ 24 ; Set the Logical Device
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; Request header definition
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RH_LEN equ byte ptr 0
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RH_UNIT equ byte ptr 1
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RH_CMD equ byte ptr 2
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RH_STATUS equ word ptr 3
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RHS_DONE equ 0100h
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RHS_BUSY equ 0200h
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RHS_RM equ 0800h
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RHS_ERROR equ 8000h
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;******
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;* No longer safe to use - some device drivers trample on them....
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;*
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;* RH_STRATEGY equ dword ptr 5[bx] ; Device Strategy Routine
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;* RH_STRATOFF equ word ptr 5[bx] ; Strategy Offset
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;* RH_STRATSEG equ word ptr 7[bx] ; Strategy Segment
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;* RH_INTERRUPT equ dword ptr 9[bx] ; Device Interrupt Routine
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;* RH_INTOFF equ word ptr 9[bx] ; Intterupt Offset
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;* RH_INTSEG equ word ptr 11[bx] ; Interrupt Segment
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;*****
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; Request header for media check
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RH1_MEDIA equ byte ptr 13 ; BDOS: current media byte
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RH1_RETURN equ byte ptr 14 ; driver: return code (00, 01, FF)
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RH1_VOLID equ dword ptr 15 ; driver: volume label address
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; Request header for "build BPB"
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RH2_MEDIA equ byte ptr 13 ; BDOS or driver?
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RH2_BUFFER equ dword ptr 14 ; BDOS: scratch buffer for driver use
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RH2_BPB equ dword ptr 18 ; driver: address of new BPB
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; Request header for input/output
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RH4_MEDIA equ byte ptr 13 ; BDOS: current media byte
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RH4_BUFFER equ dword ptr 14 ; BDOS: disk transfer address
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RH4_BUFOFF equ word ptr 14
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RH4_BUFSEG equ word ptr 16
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RH4_COUNT equ word ptr 18 ; BDOS: sector count
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RH4_SECTOR equ word ptr 22 ; BDOS: starting sector
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RH4_VOLID equ dword ptr 24 ; driver: volume if illegal disk change
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; Request Header for Non-Destructive Input
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RH5_CHAR equ byte ptr 13 ; Character Read from Device
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; Request header for generic IOCTL
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RH19_CATEGORY equ word ptr 13 ; BDOS: major/minor function number
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RH19_GENPB equ word ptr 19 ; BDOS: extra parameters
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; Request header for get/set logical drive
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RH24_DRIVE equ byte ptr 13 ; Set logical drive
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; Request header lengths
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RH0_LEN equ 22
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RH1_LEN equ 15
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RH2_LEN equ 24
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if DOS5
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RH4_LEN equ 30
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else
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RH4_LEN equ 22 ; or 24 for big sectors
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endif
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RH4_CDEV_LEN equ 22
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RH5_LEN equ 14
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RH12_LEN equ 22
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RH13_LEN equ 13
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RH14_LEN equ 13
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RH15_LEN equ 13
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RH19_LEN equ 23
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RH24_LEN equ 21
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