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Turnbull China Bikeride
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Turnbull China Bikeride - Disc 2.iso
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1992-04-29
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From info-admin@newcastle.ac.uk Thu Apr 23 08:05:47 1992
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Subject: Re: Request: sources; Topic: archimedes idecalls
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Path: newcastle.ac.uk!uknet!ukc!acorn!osmith
>From: osmith@acorn.co.uk (Owen Smith)
Newsgroups: comp.sys.acorn
Subject: Re: Risc OS 3.00 upgrade
Message-ID: <10365@acorn.co.uk>
Date: 14 Oct 91 11:11:44 GMT
References: <1991Oct11.190517.165@vaxa.strath.ac.uk>
Sender: osmith@acorn.co.uk
Distribution: comp
Organization: Acorn Computers Ltd, Cambridge, England
Lines: 162
In article <1991Oct11.190517.165@vaxa.strath.ac.uk> cabr07@vaxa.strath.ac.uk
writes:
>Does the IDE and high density floppy driver cope with podule mounted
>expansion cards where the podule simply supplies the hardware address
>(like ADFS and the ST506 drivers)?
This should clear things up for you:
New ADFS SWIs and service calls
;*********************************************************************
ADFS_ControllerType
;
; Returns the controller type of a disc
;
; Entry:
; R0 = drive number (0..7)
;
; Exit:
; R0 = controller type
; 0 => disc not present
; 1 => 1772
; 2 => 765
; 3 => ST506
; 4 => IDE
;*********************************************************************
ADFS_PowerControl
;
; Controls the power-saving features of the ADFS system
; It can be dangerous to use the drive spin control SWIs on drives that do
; not fully support them: the controllers on at least two drives tested hang
; up when autospindown is enabled and a reset does not recover the situation
; (power-on reset does).
;
; Entry:
; R0 = reason
;
; 0 => read drive spin status
; Entry:
; R1 = drive (4..7)
; Exit:
; R2 = 0 => drive is not spinning
; !0 => drive is spinning
;
; 1 => set drive autospindown
; Entry:
; R1 = drive (4..7)
; R2 = 0 => disable autospindown and spinup drive
; !0 => set autospindown to R2*5 seconds
; Exit:
; R3 = previous enable value
;
; 2 => manual control of drive spin without affecting autospindown
; Entry:
; R1 = drive (4..7)
; R2 = 0 => spin down immediately
; !0 => spin up immediately
;*********************************************************************
ADFS_SetIDEController
;
; Gives the IDE driver the details of an alternative controller.
;
; Entry:
; R2 -> IDE controller
; R3 -> interrupt status of controller
; R4 = AND with status, NE => IRQ
; R5 -> interrupt mask
; R6 = OR into mask enables IRQ
; R7 -> data read routine (0 for default)
; R8 -> data write routine (0 for default)
; SB -> static workspace
;
; Exit:
; VS => error
; R0 = error
; VC => no error
; R0 preserved
; All other registers preserved
;*********************************************************************
ADFS_IDEUserOp
;
; Direct user interface for low-level IDE commands.
; Must not be called in background.
;
; Entry:
; R0 = b0 = action
; 1 => reset controller
; 0 => process command
; b25..b25 = transfer direction
; 00 => no transfer
; 01 => read
; 10 => write
; 11 reserved
; R2 -> parameter block for command and results
; R3 -> buffer
; R4 = length to transfer
; R5 = timeout in centiseconds (0 = default)
; SB -> static workspace
; MODE: SVC
; IRQ state: unknown
;
; Exit:
; VS => error
; R0 -> error block
; VC => no error
; R0 = command status (0 or a disc error number)
; Parameter block updated
; R3 updated
; R4 updated
; R5 undefined
; All other registers preserved
; IRQ state: preserved but IRQs enabled during call
;*********************************************************************
Service_ADFSPoduleIDE
;
; Issued by ADFS to locate an IDE podule.
;
; Entry:
; R1 = Service_ADFSPoduleIDE
; R2 -> current IDE controller
; R3 -> interrupt status of controller
; R4 = AND with status, NE => IRQ
; R5 -> interrupt mask
; R6 = OR into mask enables IRQ
; R7 -> data read routine (0 for default)
; R8 -> data write routine (0 for default)
;
; Exit:
; R1 = Service_Serviced
; R2 -> new IDE controller
; R3 -> interrupt status of controller
; R4 = AND with status, NE => IRQ
; R5 -> interrupt mask
; R6 = OR into mask enables IRQ
; R7 -> data read routine (0 for default)
; R8 -> data write routine (0 for default)
;*********************************************************************
Service_ADFSPoduleIDEDying
;
; Issued by podule module to tell ADFS of imminent demise.
;
; Entry:
; R1 = Service_ADFSPoduleIDEDying
;
; Exit:
; All registers preserved
;*********************************************************************
The views expressed are my own and are not necessarily those of Acorn.