OPTIONS.MAC

;***********************************************************************
;**  Optional global settings for CPU280 System Software              **
;**  (Equations used for conditional assembly)                        **
;**  950122 Tilmann Reh                                               **
;***********************************************************************

; 10-July-2017 Tony Nicholson
; Comments translated from German to English (using Google
; Translate with some appropriate language adjustments resulting
; from an examination of the instruction sequences).  Also
; corrected the syntax to be compatible with Hector Peraza's
; ZSM4 Z80/Z180/Z280 assembler 

; Boolean constants:

false	equ	0
true	equ	not false

; The following flag is for usage of the same module sources for both
; System BIOS and Boot Loader. Do not change its value! You will (later)
; need two files SYSTEM.LIB and LOADER.LIB which contain exactly the
; same definitions, except for this flag. The appropriate file will
; be copied to OPTIONS.LIB prior to assembly, which is included in all
; the module source files.

loader	equ	false	; Selection between System BIOS and Boot Loader

; Language for texts and error messages:

deutsch	equ	false	; deutsche Meldungen & Texte
english	equ	true	; english messages & texts

    if deutsch
	YesChar		equ	'J'	; Ja
	NoChar		equ	'N'	; Nein
	RetryChar	equ	'W'	; Wiederholen
	IgnoreChar	equ	'I'	; Ignorieren
	AbortChar	equ	'A'	; Abbruch
    endif
    if english
	YesChar		equ	'Y'	; Yes
	NoChar		equ	'N'	; No
	RetryChar	equ	'R'	; Retry
	IgnoreChar	equ	'I'	; Ignore
	AbortChar	equ	'A'	; Abort
    endif

; Disk change detection method:
; Mask consisting of four bits, specifying DCHG signalling (bit set)
; or WP edge detection (bit reset) for floppy drives A: through D:.
; If a drive supports WP edge detection (seemingly all 5.25" drives
; and some older 3.5" drives) you should use this method since it
; requires less CPU power (about 0.033% per logged drive, opposed to
; about 0.109% per logged drive for the DCHG method). Caution: the
; WP status of the disk may influence the drive's behaviour - always
; check with both possible states before using WP edge detection.

;		DCBA
ChgCap	equ	0011b	; D:/C: WP edge detection, B:/A: have DCHG signal

; Options for additional ECB-Bus boards:

ctram	equ	false	; c't 1 MB RAM-Disk as drive F:
ctsolid	equ	false	; c't 256 KB Solid-State-Disk as drive G:
ide	equ	false	; REHdesign IDE-Interface (HD from H:, Centronics)
omti	equ	false	; OMTI Hard Disk Controller (XT) with ECB adaptor

hard	equ	ide or omti ; hard disk at all
parts	equ	4	; hard disk: number of partitions

ioclk	equ	false	; REH ECB-I/O-Clk Interface Board
spool	equ	false	; c't 64k Printer Spooler with TTL ECB-Bus interface
hgt	equ	false	; REHdesign HGT Grafics Terminal (boot device!)