M100 CP/M: Difference between revisions
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<big>'''What is M100 CP/M?'''</big> | <big>'''What is M100 CP/M?'''</big> | ||
M100 CP/M is an implementation of CP/M 2.2 that is tailored to the TRS-80 Model 100 & Tandy 102. Now able to run the predominant operating system of the 1970s & early 1980s means a huge library of programming languages, text adventures, utilities, etc, can now run on these computers. Here is a quick | M100 CP/M is an implementation of CP/M 2.2 that is tailored to the TRS-80 Model 100 & Tandy 102. Now able to run the predominant operating system of the 1970s & early 1980s means a huge library of programming languages, text adventures, utilities, etc, can now run on these computers. Here is a quick [https://obsolescence.wixsite.com/obsolescence/introduction-to-cpm look] into CP/M. M100 CP/M is free to download from [[Installation and Set Up]]. | ||
In order to run CP/M, these computers need two changes to hardware: | In order to run CP/M, these computers need two changes to hardware: | ||
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<tr><td>M100/T102</td><td>CPM.CO</td><td>[[Media:CPM.CO|CPM.CO]]</td><td>1</td></tr> | <tr><td>M100/T102</td><td>CPM.CO</td><td>[[Media:CPM.CO|CPM.CO]]</td><td>1</td></tr> | ||
<tr><td>M100/T102</td><td>CPM for 2MB REXCPM</td><td>[[Media:Cpm210.bk|CPM210.BK]]</td><td>1</td></tr> | <tr><td>M100/T102</td><td>CPM for 2MB REXCPM</td><td>[[Media:Cpm210.bk|CPM210.BK]]</td><td>1</td></tr> | ||
<tr><td></td><td> | <tr><td></td><td> or </td><td></td><td></td></tr> | ||
<tr><td>M100/T102</td><td>CPM for 4MB REXCPM</td><td>[[Media:Cpm410.bk|CPM410.BK]]</td><td>1</td></tr></table> | <tr><td>M100/T102</td><td>CPM for 4MB REXCPM</td><td>[[Media:Cpm410.bk|CPM410.BK]]</td><td>1</td></tr></table> | ||
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- shows free space on disk | - shows free space on disk | ||
Here is a [http://www.oocities.org/homeofoscarvermeulen/cpm/cpm_commands.html summary] of commands. Here is the full [http://www.cpm.z80.de/manuals/cpm22-m.pdf manual]. | Here is a [http://www.oocities.org/homeofoscarvermeulen/cpm/cpm_commands.html summary] of commands. Here is the full [http://www.cpm.z80.de/manuals/cpm22-m.pdf manual] for CP/M 2.2. | ||
= Special M100 CP/M features = | |||
SCREEN CONTROL | |||
CP/M is designed for 80 x 24 screen size, thus the 40 x 8 of the M100 presents challenges. Some software wont recognise ctrl-s (or PAUSE key on M100) to stop scrolling. Zork adventure series is an example of this. So M100 CP/M can turn off scrolling until a key is pressed. | |||
F1 - toggles between Scroll Locked (Sc L) and 'Scroll Standard' (Sc S or). Press LABEL to see this. In Locked mode, when the display is ready to scroll, the cursor will be at the right-hand bottom awaiting any key press. F1 can be pressed at anytime, however best to select it before starting the offending program. | |||
Some software doesn't use the standard CP/M key-entry routines resulting in a cursor not displaying. Zork is also an example of this. | |||
F2 - toggles between 'Cursor Full-time (Cu F) and 'Cursor Standard' (Cu S). Press LABEL to see this. If a program doesn't show a cursor when at keyboard input, select 'Cursor Full-time'. F2 can be pressed anytime. The reason for Cursor Standard being an option is so a flashing cursor isn't shown when processing or doing graphics on the M100 LCD. | |||
F3 - M100 CP/M can redirect video output to an external monitor giving full 80x24 display. Using this [VT100] | |||
= Acknowledgements = | = Acknowledgements = | ||
Revision as of 15:40, 17 May 2020
============= PAGE UNDER DEVELOPMENT!!!================
What is M100 CP/M?
M100 CP/M is an implementation of CP/M 2.2 that is tailored to the TRS-80 Model 100 & Tandy 102. Now able to run the predominant operating system of the 1970s & early 1980s means a huge library of programming languages, text adventures, utilities, etc, can now run on these computers. Here is a quick look into CP/M. M100 CP/M is free to download from Installation and Set Up.
In order to run CP/M, these computers need two changes to hardware:
* RAM needs to be present in lower 32KB region * Some form of memory to act as disk storage
REXCPM is the device that achieves this. Developed by long-standing M100 hardware specialist Steve Adolph, REXCPM is a plug 'n play Option ROM board that provides the lower 32KB, plus either 2MB or 4MB of RAM-disk.
This package of M100 CP/M & REXCPM makes these computers a venerable CP/M machine with their small footprint, enviable keyboard, super-fast RAM-disk, long battery life, etc, etc.
Status
* M100 CP/M is currently in beta testing
Software
Utilities
Installation and Set Up
Once your REXCPM board is installed & verified by running RXCMGR (REX manager) successfully, download these files:
| Model | Description | File | Revision |
| M100/T102 | Installer/updater | CPMUPD.CO | 1 |
| M100/T102 | CPM.CO | CPM.CO | 1 |
| M100/T102 | CPM for 2MB REXCPM | CPM210.BK | 1 |
| or | |||
| M100/T102 | CPM for 4MB REXCPM | CPM410.BK | 1 |
Move CPMUPD.CO & CPM.CO to your M100. Leave CPM210.BK (or CPM410.BK) on the emulated-TPDD.
Issue CLEAR 60000 from Basic. In Main Menu, execute CPMUPD.CO.
Enter the 'Install filename', either CPM210.BK or CPM410.BK. As you have no existing CP/M disk, press 'y' to confirm.
M100 CP/M will install, taking 5-lines of progress dots... (about 2min 35sec). On completion, you'll be returned to Main Menu. If there was a TPDD-error, the program will stop & display error message.
Re-activate RXCMGR by selecting it & F8. CP/M can be entered by two ways: selecting CPM.CO or by REXCPM hot-key 'ctrl-c'. In fact if you're going to only use the hot-key, the CPM.CO program can be deleted from Menu.
Using CP/M
To exit CP/M to M100 Main Menu, press F8.
There is only one 'disk drive' in M100 CP/M, the "A" drive. It is however nearly 2MB (or 4MB) in size.
CP/M commands can be in lower case, here's two common examples:
dir
- produces a Directory
stat
- shows free space on disk
Here is a summary of commands. Here is the full manual for CP/M 2.2.
Special M100 CP/M features
SCREEN CONTROL
CP/M is designed for 80 x 24 screen size, thus the 40 x 8 of the M100 presents challenges. Some software wont recognise ctrl-s (or PAUSE key on M100) to stop scrolling. Zork adventure series is an example of this. So M100 CP/M can turn off scrolling until a key is pressed.
F1 - toggles between Scroll Locked (Sc L) and 'Scroll Standard' (Sc S or). Press LABEL to see this. In Locked mode, when the display is ready to scroll, the cursor will be at the right-hand bottom awaiting any key press. F1 can be pressed at anytime, however best to select it before starting the offending program.
Some software doesn't use the standard CP/M key-entry routines resulting in a cursor not displaying. Zork is also an example of this.
F2 - toggles between 'Cursor Full-time (Cu F) and 'Cursor Standard' (Cu S). Press LABEL to see this. If a program doesn't show a cursor when at keyboard input, select 'Cursor Full-time'. F2 can be pressed anytime. The reason for Cursor Standard being an option is so a flashing cursor isn't shown when processing or doing graphics on the M100 LCD.
F3 - M100 CP/M can redirect video output to an external monitor giving full 80x24 display. Using this [VT100]
Acknowledgements
I would like to thank those who have contributed to the project:
Steve Adolph - for producing REXCPM hardware (which is a delight to program). For CASS/BCR video output, hi-speed Backup and technical support.
Kenneth Pettit - for VirtualT as this project would have remained a dream if not for VT.
Mike Stein - for alerting me to Geoff Graham's VT-100 Terminal project and for beta-testing.
