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MP/M-II XIOSThis XIOS is more like a quick-and-dirty adaptation of the MP/M 1.1 XIOS. You can get it from the downloads page. On the same page you will also find Y2K updates for the TOD and SCHED utilities, as well as an updated DS1202 utility. The other MP/M utilities that use dates are SDIR, SET and SHOW, but they do not need modifications; years will be correctly output with two digits (e.g. 2000 as 00, 2001 as 01, etc.) The current version of the XIOS implements the following features:
The bootable image was generated with support for 8 memory banks, so a P112 with at least 512K of RAM is recommended. The timing parameters are for a CPU running at 16 MHz. Of course, you can use a machine with less memory, but you'll have to run GENSYS again to specify a different number of memory segments. Compiling the XIOSMicrosoft's M80 and Digital Research's LINK are used to generate the banked XIOS: M80 =XIOS.180 LINK BNKXIOS=XIOS[NR,OS] The system was generated as shown below (consult the MP/M-II manual for more details): 0A>gensys MP/M II V2.1 System Generation Copyright (C) 1981, Digital Research Default entries are shown in (parens). Default base is Hex, precede entry with # for decimal Use SYSTEM.DAT for defaults (Y) ? Top page of operating system (FF) ? Number of TMPs (system consoles) (#1) ? 2 Number of Printers (#1) ? Breakpoint RST (06) ? Enable Compatibility Attributes (N) ? Add system call user stacks (Y) ? Z80 CPU (Y) ? Number of ticks/second (#50) ? System Drive (A:) ? Temporary file drive (A:) ? Maximum locked records/process (#16) ? Total locked records/system (#32) ? Maximum open files/process (#16) ? Total open files/system (#32) ? Bank switched memory (Y) ? Number of user memory segments (#7) ? Common memory base page (B0) ? Dayfile logging at console (N) ? SYSTEM DAT FF00H 0100H TMPD DAT FE00H 0100H USERSYS STK FC00H 0200H XIOSJMP TBL FB00H 0100H Accept new system data page entries (Y) ? RESBDOS SPR EF00H 0C00H XDOS SPR CD00H 2200H Select Resident and Banked System Processes: ABORT RSP (N) ? MPMSTAT RSP (N) ? SCHED RSP (N) ? SPOOL RSP (N) ? BNKXIOS SPR BC00H 1100H BNKBDOS SPR 9900H 2300H BNKXDOS SPR 9700H 0200H TMP SPR 9300H 0400H LCKLSTS DAT 9000H 0300H CONSOLE DAT 8E00H 0200H Enter memory segment table: Base,size,attrib,bank (8E,72,80,00) ? Base,size,attrib,bank (00,8F,00,00) ? 0,8e,0,0 Base,size,attrib,bank (00,B0,00,01) ? Base,size,attrib,bank (00,B0,00,02) ? Base,size,attrib,bank (00,B0,00,03) ? Base,size,attrib,bank (00,B0,00,04) ? Base,size,attrib,bank (00,B0,00,05) ? Base,size,attrib,bank (00,B0,00,06) ? MP/M II Sys 8E00H 7200H Bank 00 Memseg Usr 0000H 8E00H Bank 00 Memseg Usr 0000H B000H Bank 01 Memseg Usr 0000H B000H Bank 02 Memseg Usr 0000H B000H Bank 03 Memseg Usr 0000H B000H Bank 04 Memseg Usr 0000H B000H Bank 05 Memseg Usr 0000H B000H Bank 06 Accept new memory segment table entries (Y) ? ** GENSYS DONE ** 0A> To load the new system, run MPMLDR (or, alternatively, reboot the machine if MPMLDR has been saved into the system tracks of the floppy): A>xmpmldr D-X Designs P112 Loader Bios (V2.1) MP/M II V2.1 Loader Copyright (C) 1981, Digital Research Nmb of consoles = 2 Breakpoint RST # = 6 Memory Segment Table: SYSTEM DAT FF00H 0100H TMPD DAT FE00H 0100H USERSYS STK FC00H 0200H XIOSJMP TBL FB00H 0100H RESBDOS SPR EF00H 0C00H XDOS SPR CD00H 2200H BNKXIOS SPR BC00H 1100H BNKBDOS SPR 9900H 2300H BNKXDOS SPR 9700H 0200H TMP SPR 9300H 0400H LCKLSTS DAT 9000H 0300H CONSOLE DAT 8E00H 0200H ------------------------- MP/M II Sys 8E00H 7200H Bank 0 Memseg Usr 0000H 8E00H Bank 0 Memseg Usr 0000H B000H Bank 1 Memseg Usr 0000H B000H Bank 2 Memseg Usr 0000H B000H Bank 3 Memseg Usr 0000H B000H Bank 4 Memseg Usr 0000H B000H Bank 5 Memseg Usr 0000H B000H Bank 6 D-X Designs P112 MP/M-II Banked Xios (V2.1) MP/M II V2.1 Copyright (C) 1982, Digital Research 0A>ds1202 /r Setting system time from CMOS clock: 12/21/02 12:29:17 0A> Note the automatic startup command (ds1202 /r) after the system is reloaded. If you have another terminal connected to the second serial port, you should see the MP/M-II prompt appearing there as well: MP/M II V2.1 Copyright (C) 1982, Digital Research 1A> Loader BIOSThe MP/M Loader BIOS is exactly the same used in MP/M 1.1. The binary image is generated at address 1700h: M80 =LDRBIOS.180 LINK LDRBIOS.BIN=LDRBIOS[NR,L1700] then combined with the MPMLDR.COM program using an utility like DDT: 0A>DDT MPMLDR.COM [MP/M II] DDT VERS 2.0 NEXT PC 1780 0100 -ILDRBIOS.BIN -R1600 NEXT PC 1F00 0100 (note the NEXT address) -V1F00 (MP/M's DDT makes things easier, 003C Falconer's DDTZ is even better) -IXMPMLDR.COM -W3C The process is explained in detail in the MP/M-II System's Implementor Guide. Making a bootable floppyThis MP/M-II distribution uses the same floppy boot loader from MP/M 1.1, and the boot track image generation is done exactly in the same way. Last modified: 4-Feb-2007 |