;:::::::::::::::::::::::::::::::::::::::::::::::**********************
;  B/P BIOS Configuration and Equate File.	** System Dependant **
;  - Retro-Brew Processors W/ RomWBW HBIOS -	**********************
;	  HBIOS specific customizations
;:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
; BIOS Configuration Equates and Macros
;
; NOTE: Must make sure settings below match hardware and
;       HBIOS configuration.
;
HBIOS	EQU	YES			; Use HBIOS functions
HBLOC	EQU	0FE00H			; Location of HBIOS proxy
MEMTOP	EQU	HBLOC - 1		; Last usable address
;
HB_DEBUG	EQU	FALSE		; See hbios.z80 file
;
; Set HB_IODEV to desired HBIOS character device unit number
;
; TODO: Query system via HBIOS API to determine number of serial
; devices available and assign up to 3 of them to the 3 serial
; device slots in BPBIOS at boot.
;
HB_IODEV	EQU	80H		; 0x80 is current HBIOS console
;
; Set HB_MDRAM/ROM to desired HBIOS disk device numbers
;
HB_MDRAM	EQU	0		; HBIOS Disk Unit #0 is usually the RAM Disk
HB_MDROM	EQU	1		; HBIOS Disk Unit #1 is usually the ROM Disk
;
; Map BPBIOS logical drive numbers (0-2) to HBIOS physical disk units
; HB_HDDEVn values map to HDRVn (see icfg-ww).
;
; The values below will be the default mapping.  They can be changed
; using BPCNFG *Physical Drive* configuration.
;
; If the RomWBW system has no floppy drives, then the hard disk units
; will start right after the memory disk units.  So, the first hard disk
; will be unit #2.  Refer to the DPH entries to see how the HBIOS
; units are mapped to drive letters.
;
HB_HDDEV0	EQU	2		; If no floppy drives in system, first HBIOS hard disk is unit #2
HB_HDDEV1	EQU	3		; Second hard disk is HBIOS Disk Device #3
HB_HDDEV2	EQU	4		; Third hard disk is HBIOS Disk Device #4
;
; Floppy disk support
;
; TODO: Query HBIOS to see if system has floppy drive(s).  For now
; we do not really support floppy drives.
;
DRV_O		SET	NO		; YES if system has flopy drives
DRV_P		SET	NO		; YES if system has flopy drives
;
; RAM/ROM Bank Reserve
;
HB_RAMRESV	EQU	5		; RAM reserve is 5 banks
HB_ROMRESV	EQU	4		; ROM reserve is 4 banks
;
; Layout of RAM banks
;
; The BID_xxx values below are used to set the initial values of
; the BPBIOS bank registers (see def-ww-xxx.lib and HB_SELMEM in
; hbios.z80).  The running values of the BPBIOS bank registers (TPABNK,
; SYSBNK, etc.) are set to absolute HBIOS bank ids in hbios.z80 during
; startup.
;
; The values below are expressed as an offset from the ending HBIOS
; RAM bank id.  They map to HBIOS bank ids
; by subtracting from the ending HBIOS bank id (N).  HBIOS RAM bank ids
; start at 80h.  The ending HBIOS bank id is (80h + RAM banks).  The
; typical layout assumes 16 banks of RAM starting at HBIOS bank id 80h
; and ending at bank id 90h (N = 90h).
;
; BPBIOS					HBIOS (TYPICAL)
; --------------------------------------	---------------
; <HBIOS>					80h   (80h)
; <RAMD>					81h   (81h)
; <RAMM>					N - 5 (8Bh)
BID_BUF	EQU	-4	; BNK3 -> RAMBNK	N - 4 (8Ch)
BID_SYS	EQU	-3	; BNK2 -> SYSBNK	N - 3 (8Dh)		
BID_USR	EQU	-2	; BNK0 -> TPABNK	N - 2 (8Eh)		
BID_COM	EQU	-1	; BNK1 ->		N - 1 (8Fh)		
;
HB_EI	MACRO
	EI
	ENDM
HB_DI	MACRO
	DI
	ENDM