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- ;
- ; Z80DOS - Z80 Disk Operating System
- ;
- ; Version 2.0a - BETA TEST VERSION - 6 Nov 87 by Carson Wilson
- ;
- ; Support file: Z80DHDR.LIB
- ; Version: 2.0
- ; Date: 6 Nov 87
- ; Author: Carson Wilson
- ; Changes: Added RTC equate. If false, use internal DOS routine
- ; instead of BIOS call for get/set time. Default address
- ; for buffer is 50 hex.
- ;
- ; Description: Options and Standard Equates
-
- ; --------------------------------------------------------------------
-
- ; Specify where in memory your BDOS begins and where your BIOS ends.
- ; The next two equates must be set for the particular system.
- ; You can use either kilobyte or page boundaries.
- ;
- ; The number for "MSize/MPages" is where your BIOS ENDS in memory. For
- ; standard 64k CP/M systems this is 64 kilobytes/256 pages.
- ;
- ; The number for "base" is where your CCP BEGINS in memory. This is
- ; computed using MSize and a value n which is the size in kilobytes/pages
- ; of your entire operating system (CCP+BDOS+BIOS). You should be able
- ; to get these values from the source code of your BIOS.
- ;
- ; 1 page = 256 bytes, so 4 pages = 1 kilobyte.
- ;
-
- ; Specify addresses using kilobyte boundaries:
-
- MSize equ 64 ; Standard 64k system size
- base equ (MSize-9)*1024 ; (MSize-n) where n is size of
- ; ..BIOS+DOS+CCP in kilobytes
- ; N varies with the length of
- ; ..your BIOS.
-
- ; Or, specify addresses using page boundaries:
-
- ;MPages equ 256 ; 256 page system size
- ;base equ (MPages-37)*256 ; (mpages-n) where n is size in
- ; ..pages of BIOS+DOS+CCP
- ; N varies with the length of
- ; ..your BIOS.
-
- ; Standard addresses and equates - don't change the next five equates:
-
- RamLow equ 0000h ; Start address memory
- DOS equ base+800h ; Start address DOS
- BIOS equ DOS+00e00h ; Start address BIOS
- false equ 0
- true equ not false
-
-
- ; RTC - Real Time Clock
- ;
- ; Set to true if you are using a Real Time Clock as the
- ; source for your time, and fill in the address at BIOStim below.
- ;
- ; Set to false to use a 5 byte buffer in protected memory
- ; as a substitute for a Real Time Clock, and give the address of
- ; the 5 byte buffer at label TimeBuf below.
- ;
- RTC equ false ; Real time clock
-
- if RTC
- BIOStim equ BIOS+nnnn ; Address of BIOS jump or RTC driver
-
- else
- TimeBuf equ 50h ; Address of 5-byte buffer
- endif ; RTC
-
-
- ; ResDsk - You can optionally define an alternate disk for disk reset.
- ; This is useful in floppy systems with a virtual drive feature.
- ; By defining a non-virtual drive (drive B in Morrow MD3) as the
- ; reset disk, you avoid having to switch back to disk A every time a
- ; disk reset is performed. However, this requires that you always
- ; have a diskette in drive B:.
- ;
-
- ResDsk equ 0 ; CP/M default is disk A for resets
- ; ..0=A, 1=B, 2=C, etc.
-
-
- ; Options - Bit 0: public file enable(1)/disable(0)
- ; Bit 1: delay 256 characters active(1)/disable(0)
- ;
- Options equ 00000011B ; Enable public file and delay
-
-
- ; -------------------------------------------------------------
- ;
- ; The remaining equates should stay the same for all systems:
- ;
- ; -------------------------------------------------------------
-
- ; Standard BIOS function offsets:
-
- Boot equ BIOS+00000h ; BIOS cold boot
- WBoot equ BIOS+00003h ; BIOS warm boot
- ConSt equ BIOS+00006h ; BIOS console status
- ConIn equ BIOS+00009h ; BIOS console input
- ConOut equ BIOS+0000ch ; BIOS console output
- list equ BIOS+0000fh ; BIOS list output
- punch equ BIOS+00012h ; BIOS punch output
- reader equ BIOS+00015h ; BIOS reader input
- home equ BIOS+00018h ; BIOS home disk
- SelDsk equ BIOS+0001bh ; BIOS select disk
- SetTrk equ BIOS+0001eh ; BIOS select track
- SetSec equ BIOS+00021h ; BIOS select sector
- SetDMA equ BIOS+00024h ; BIOS set DMA address
- read equ BIOS+00027h ; BIOS read 128 bytes
- write equ BIOS+0002ah ; BIOS write 128 bytes
- ListSt equ BIOS+0002dh ; BIOS list status
- SecTrn equ BIOS+00030h ; BIOS sector translation
-
- ; Internal definitions:
-
- ContC equ 003h ; Key to generate warm boot
- ContH equ 008h ; Backspace
- ContS equ 013h ; Control-S
- tab equ 009h ; Tab
- lf equ 00ah ; Line feed
- cr equ 00dh ; Carriage return
- ContP equ 010h ; Set/reset print flag
- ContX equ 018h ; Delete line (backspaces)
- DrvSep equ 03ah ; Drive seperator (:)
- rubout equ 07fh ; Delete last char
- ;
- MaxCmd equ 40 ; Number of valid DOS commands
-
- ; END Z80DHDR.LIB
-