docs: add the HDK

code/HDK/EPOCSIBO.INC

@@ -0,0 +1,86 @@
+        .xlist
+; Include file - EPOCSIBO.INC
+; Epoc/Os SIBO specific include file
+; Copyright (c) Psion PLC 1989-90.
+;
+;  VER    DATE    BY  DESCRIPTION
+; ----- -------- ---- -----------
+; 2.00F 30/09/90 NSM  Final release
+;
+EPOCSIBO_INC		equ	1
+;
+SupplyEnt struc
+MainBatteryReading	dw	?
+LithiumBatteryReading	dw	?
+MainsPresent		dw	?
+SupplyEnt ends
+;
+SupplyWarningsEnt struc
+MainBatteryWarning	dw	?
+LithiumBatteryWarning	dw	?
+MainBatteryMaxValue	dw	?
+LithiumBatteryMaxValue	dw	?
+SupplyWarningsEnt ends
+;
+MainBatZero		equ	0
+MainBatVeryLow		equ	1
+MainBatLow		equ	2
+MainBatGood		equ	3
+;
+SupplySoundWarning	equ	0001h
+SupplyFlashWarning	equ	0002h
+SupplySystemTimeChanged	equ	0004h
+;
+SupplyInfoEnt struc
+SuMainBatLevel		db	?
+SuMainBatStatus		db	?
+SuBackupBatLevel	db	?
+SuDcLevel		db	?
+SuWarningFlags		dw	?
+SuInsertionDate		dd	?
+SuTicksInUseBattery	dd	?
+SuTicksInUseDc		dd	?
+SuMilliampTicks		dd	?
+SupplyInfoEnt ends
+;
+SsdUnitInfo struc
+SsdUnitStatus		db	?
+SsdUnitType		db	?
+SsdUnitDevices		db	?
+SsdUnitAsicType		db	?
+SsdUnitChanged		db	?
+SsdUnitReadCmd		db	?
+SsdUnitTotalSectors	dw	?
+SsdUnitMask		dw	?
+SsdUnitSectorsPerDevice	dw	?
+SsdUnitSpare		db	?
+SsdUnitShift		db	?
+SsdUnitDoReadCmd	dw	?
+SsdUnitInfo ends
+;
+SsdData struc
+SsdUnitInfoBuffer SsdUnitInfo 4 dup(<>)
+SsdDoorStatus	db	?
+SsdDoorDelay	db	?
+SsdPakCritical	db	?
+SsdDoorOpened	db	?
+SsdOldFrcVector dd	?
+SsdFrcFlag      dw      ?
+SsdPakChannel   db      ?
+SsdWriteFlag	db	?
+SsdFlashCount	dw	?
+SsdFlashVector	dw	?
+SsdFlashAddress	dw	?
+SsdFlashOffset	dw	?
+SsdFlashMaxProgramPulses dw ?
+SsdSaveStack    dw      ?
+SsdNeedSerialResume db	?
+SsdBackTo4	db	?
+SsdA9DoorNmiEnabled db	?
+SsdSpare	db	?
+SsdFlashProgram	dw	?
+SsdNewPddSpareBuffer db 400h dup (?)
+SsdData ends
+;
+        .list
+