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Z80-CP/M and Alien Disk Format Reader

Utility for Genie IIIs with Holte CP/M Plus
Created by Volker Dose & Egbert Schroeer
(c) 1992

Update for sdltrs emulator (c) 2023

First assembler code since 30 years by E. Schroeer

With crowd knowledge of Jens Guenther & Fritz Chwolka :)

This utility allows reading various foreign formats using HOLTE-CP/M on Genie IIIs with Holte CP/M Plus. It provides support for the following foreign disk formats:

  • TRS80 format: TRS80
  • MONTEZUMA CP/M format: MM-D80

HOLTE-CP/M requires the following information to read foreign formats:

  1. The DPB (Disk Parameter Block)
  2. The DTB (Drive Control Table)
  3. The sector translation table

These parameters must be created manually beforehand. Default format is MM-D80 aka MONTEZUMA CP/M format.

Screenshot 2023-05-20 085231

Screenshot 2023-05-20 085054

Change Log

  • 11/03/2023: bugs reported by Jens Guenther and ZASM & M80 compatibility edits
  • 03/19/2023: Possible alien disk formats limited to 80 characters in total, reduced to 8 bytes per name compared to the original 10 bytes.
  • 03/26/2023: Updated MM-D80 skew table, fixed a bug.
  • 05/14/2023: Additional formats added by Jens Guenther.

The output of the possible disk formats was truncated in 'alien.com' after one line. Holte CP/M has a 'screen control code' ESC X that enables 'automatic line break' and displays all entries.

  • 05/17/2023: Added functionality to automatically enable 'automatic line break' using the screen control code ESC X, allowing all entries to be displayed in the 'foreign' output.Implemented the option to turn off 'automatic line break' after displaying the list. Updated the length back to 10 characters for a more organized and visually appealing listing.

  • 7/14/2023: Major change and fix to support different work environments: The default DMA address for transient programs is 0080H. The CCP also initializes this area to contain the command tall of the command line. The first position includes the number of characters in the command line, followed by the command line characters. The character following the last command tail character is set to binary zero. The command line characters are preceded by a leading blank and are translated to ASCII upper-case. This means the actual "Command tail" is only located from address 0082h, since the "Command tail" length is in 0080h and space is automatically inserted in 0081h. That said, with 'Z3PLUS' xtail equ 0082h and with 'CCP' would be xtail equ 0080h KUDOs to Jens Guenther for finding this out and reporting.

  • 7/15/2023: bug fixes and update of readme.md; rebranding foreign.com to alien.com

  • 09/21/2023: new formats provided by Jens Guenther and new release 3.1

Referring to the source and look at the source code for more information.

ALIEN.COM 3.2

List of implemented alien formats

List of Implemented Alien Formats

The length of the character string is limited to 10. The first entry is the default format, which is used if no format name is specified.

Format Name Description Capacity Side Density Capacity Sector Size Skew
MM-D80 MONTEZUMA CP/M format: MM-D80 - exchange format via TRSTOOLS 80 tracks Double-sided (DS) Double density (DD) 800K 512 Bytes 2
ABC80 Luxor ABC80 format 40 tracks Single-sided (SS) Double density (DD) 152K 256 Bytes 7
ABC800 Luxor ABC800 format 80 tracks Double-sided (DS) Double density (DD) 760K 1024 Bytes
ACTRIX Actrix Computer Corporation Access Computer format 80 tracks Double-sided (DS) Double density (DD) 780K 1024 Bytes 3
ALPHA-P3 Triumph Adler alphaTronic P3 format 80 tracks Double-sided (DS) Double density (DD) 790K 1024 Bytes
ALPHA-PC Triumph Adler alphaTronic PC format 40 tracks Double-sided (DS) Double density (DD) 320K 256 Bytes
ASTER-3S Aster CT-80 System format 80 tracks Double-sided (DS) Double density (DD) 780K 1024 Bytes
ALTOS Altos 5-15 format 80 tracks Double-sided (DS) Double density (DD) 768K 1024 Bytes
BOND-2 Bondwell 2 format 80 tracks Single-sided (SS) Double density (DD) 350K 256 Bytes
BOND-12 Bondwell 12 format 80 tracks Double-sided (DS) Double density (DD) 768K 1024 Bytes
BULLET Wave Mate Bullet format 80 tracks Double-sided (DS) Double density (DD) 790K 1024 Bytes
CASIO Casio FP-1100/FP-1020 format 40 tracks Double-sided (DS) Double density (DD) 320K 256 Bytes
CPM-8640 CP/M-86 v2 format 40 tracks Double-sided (DS) Double density (DD) 360K 512 Bytes
CPM-8680 CP/M-86 v2 format 80 tracks Double-sided (DS) Double density (DD) 720K 512 Bytes
ELZET Elzet 80 format 80 tracks Double-sided (DS) Double density (DD) 768K 1024 Bytes
EXIDY Exidy Sorcerer format 40 tracks Single-sided (SS) Double density (DD) 196K 512 Bytes
GDOS GDOS 2.4 format 80 tracks Double-sided (DS) Double density (DD) 720K 256 Bytes
HOLTE-G3 Thomas Holte CP/M 2.2c/3.0a format 80 tracks Double-sided (DS) Double density (DD) 768K 512 Bytes
KAYPRO-2 Kaypro II format 40 tracks Single-sided (SS) Double density (DD) 196K 512 Bytes
EAGLE Eagle I/II format 80 tracks Single-sided (SS) Double density (DD) 390K 1024 Bytes 2
HOLTEG2S Thomas Holte Genie IIs/Speedmaster format 80 tracks Single-sided (SS) Double density (DD) 390K 512 Bytes
LOBO256 Lobo Systems 256K format 80 tracks Single-sided (SS) Double density (DD) 256K 512 Bytes
LOBO512 Lobo Systems 512K format 80 tracks Double-sided (DS) Double density (DD) 512K 512 Bytes
LNW-256 LNW Research lnw256 format 40 tracks Single-sided (SS) Double density (DD) 166K 256 Bytes 5
LNW-512 LNW Research lnw256 format 40 tracks Single-sided (SS) Double density (DD) 332K 512 Bytes 5
LOWE-A1 Lowe Electronics CP/M 2.2a format 80 tracks Single-sided (SS) Double density (DD) 346K 256 Bytes
LOWE-A2 Lowe Electronics CP/M 2.2a format 80 tracks Double-sided (DS) Double density (DD) 696K 256 Bytes
LOWE-B1 Lowe Electronics CP/M 2.2b format 80 tracks Single-sided (SS) Double density (DD) 384K 256 Bytes 4K Block
LOWE-B2 Lowe Electronics CP/M 2.2b format 80 tracks Double-sided (DS) Double density (DD) 696K 256 Bytes 4K Block
MAGIC Magic PBC-88 format 40 tracks Double-sided (DS) Double density (DD) 390K 512 Bytes
MBC-1200 Sanyo MBC-1200/1250 format 80 tracks Double-sided (DS) Double density (DD) 624K 256 Bytes 3
MBC-1000 Sanyo MBC-1000/1100 format 40 tracks Double-sided (DS) Double density (DD)
MBC-1000 Sanyo MBC-1000/1100 format 40 tracks Double-sided (DS) Double density (DD) 312K 256 Bytes 3
MS-DOS MS-DOS format 80 tracks Double-sided (DS) Double density (DD) 720K 1024 Bytes
MM-S40 Montezuma Micro 40T Standard SYSTEM format 40 tracks Single-sided (SS) Double density (DD) 170K 256 Bytes 2
MM-D40 Montezuma Micro 40T Standard DATA format 40 tracks Single-sided (SS) Double density (DD) 200K 512 Bytes 2
MM-S80 Montezuma Micro 80T DS SYSTEM format 80 tracks Double-sided (DS) Double density (DD) 710K 256 Bytes 2
MCCPM MCCP/M format 80 tracks Double-sided (DS) Double density (DD) 800K 1024 Bytes
MORROW Morrow Micro Decision format 40 tracks Single-sided (SS) Double density (DD) 190K 1024 Bytes 3
MONROE Monroe 1860 format 40 tracks Single-sided (SS) Double density (DD) 190K 1024 Bytes 3
MD3 Morrow Micro Decision MD3 format 40 tracks Double-sided (DS) Double density (DD) 390K 1024 Bytes 3
NABUPC NABU PC format 80 tracks Double-sided (DS) Double density (DD) 800K 1024 Bytes
NEC-8800 NEC PC-8800/8801 format 40 tracks Double-sided (DS) Double density (DD) 306K 256 Bytes
PROF#4 Prof80 (Format IV) format 80 tracks Double-sided (DS) Double density (DD) 770K 512 Bytes 2
OMIKRON Omikron Mapper I TRS-80 Model I/III format 35 tracks Single-sided (SS) Single density (SD) 83K 128 Bytes 4
OR512 Oettle & Reichler format 80 tracks Double-sided (DS) Double density (DD) 702K 512 Bytes 3
OR1024 Oettle & Reichler format 80 tracks Double-sided (DS) Double density (DD) 702K 1024 Bytes 3
OSBORNE Osborne 1 format 40 tracks Single-sided (SS) Single density (SD) 90K 256 Bytes 2
OSBEXEC Osborne 2 Executive format 40 tracks Single-sided (SS) Double density (DD) 185K 1024 Bytes
QX10 Epson QX-10 format 40 tracks Double-sided (DS) Double density (DD) 380K 512 Bytes
RAINBOW DEC Rainbow 100+ format 80 tracks Single-sided (SS) Double density (DD) 390K 512 Bytes 2
RAIR Rair Black Box format 40 tracks Single-sided (SS) Double density (DD) 190K 1024 Bytes 3
ROBO-D40 Robotron PC 1715 Data format 40 tracks Single-sided (SS) Double density (DD) 190K 1024 Bytes Data Disk
ROBO-S40 Robotron PC 1715 Data format 40 tracks Single-sided (SS) Double density (DD) 190K 1024 Bytes System Disk
ROBO-D80 Robotron PC 1715 Data format 80 tracks Double-sided (DS) Double density (DD) 780K 1024 Bytes Data Disk
ROBO-S80 Robotron PC 1715 Data format 80 tracks Double-sided (DS) Double density (DD) 780K 1024 Bytes System Disk
RSCPM3 Radio Shack TRS-80 Model 4/4P CP/M Plus format 40 tracks Single-sided (SS) Double density (DD) 156K 512 Bytes
DECROBIN DEC VT-180 "Robin" format 40 tracks Single-sided (SS) Double density (DD) 171K 512 Bytes 2
SCHMIDTKE Schmidtke Genie I CP/M 2.2 System format 80 tracks Double-sided (DS) Double density (DD) 768K 1024 Bytes
SCHROEDER Gerald Schroeder Genie IIs CP/M 2.2 System format 80 tracks Double-sided (DS) Double density (DD) 768K 1024 Bytes
SOABAR Soabar CDX 31 format 40 tracks Double-sided (DS) Double density (DD) 390K 1024 Bytes
S80-DD Klaus Kaempf CP/M 2.2x/3.0 System format 80 tracks Double-sided (DS) Double density (DD) 768K 1024 Bytes
D80-DD Klaus Kaempf CP/M 2.2x/3.0 Data format 80 tracks Double-sided (DS) Double density (DD) 800K 1024 Bytes
TV802 Televideo 802 format 40 tracks Double-sided (DS) Double density (DD) 342K 256 Bytes
TRS80CPM TRS-80 Model I/III/4/4P CP/M format 40 tracks Single-sided (SS) Double density (DD) 180K 512 Bytes
TRS80-LB TRS-80 Model II Lifeboat format 77 tracks Single-sided (SS) Double density (DD) 600K 1024 Bytes 3
TRS80-FMG TRS-80 Model II FMG format 77 tracks Single-sided (SS) Double density (DD) 486K 256 Bytes
TRS80-PT TRS-80 Model II/12/16 Pickles & Trout format 77 tracks Single-sided (SS) Double density (DD) 600K 512 Bytes
VIS1050 Visual 1050 format 80 tracks Single-sided (SS) Double density (DD) 390K 512 Bytes
VORTEX Amstrad CPC Vortex format 80 tracks Double-sided (DS) Double density (DD) 712K 512 Bytes
XEROX820I Xerox 820 format 40 tracks Single-sided (SS) Single density (SD) 82K 128 Bytes 5
XER-820II Xerox 820-II format 40 tracks Single-sided (SS) Double density (DD) 164K 256 Bytes 5
Z-100 Zenith Z-100/Heath H-100 format 40 tracks Double-sided (DS) Double density (DD) 320K 512 Bytes
ZORBA Zorba format 40 tracks Double-sided (DS) Double density (DD) 390K 512 Bytes
ALPHA-P2 Triumph Adler alphaTronic P2 format 40 tracks Single-sided (SS) Double density (DD) 320K 256 Bytes
ALSPA Alspa format 77 tracks Single-sided (SS) Double density (DD) 600K 1024 Bytes
AMPRO Ampro Little Board Z80 format 40 tracks Single-sided (SS) Double density (DD) 320K 256 Bytes
HEATH Heath H89, Magnolia CP/M format 40 tracks Single-sided (SS) Double density (DD) 166K 512 Bytes
JOYCE Amstrad PCW 8256 "Joyce" format 40 tracks Single-sided (SS) Double density (DD) 175K 512 Bytes
MOLE-S9 Molecular Series 9 format 40 tracks Double-sided (DS) Double density (DD) 342K 512 Bytes
PERTEC Pertec PCC-2000 format 77 tracks Single-sided (SS) Double density (DD) 480K 256 Bytes 5
SISPHUS Sisyphus format 77 tracks Single-sided (SS) Double density (DD) 450K 128 Bytes
VIXEN Osborne Vixen format 40 tracks Double-sided (DS) Double density (DD) 390K 1024 Bytes 2

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