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@ -3,23 +3,23 @@ |
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## Z80/Z180 System Software |
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Version 3.1 Pre-release |
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05 Nov 2022 |
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10 Dec 2022 |
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Wayne Warthen <wwarthen@gmail.com> |
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### Download |
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- [RomWBW Distribution |
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Package](https://github.com/wwarthen/RomWBW/releases) |
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- [RomWBW Distribution |
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Package](https://github.com/wwarthen/RomWBW/releases) |
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### Related Pages |
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- [RomWBW Architecture |
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Document](https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=software:firmwareos:romwbw:romwbw_architecture.pdf) |
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- [RomWBW |
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Applications](https://www.retrobrewcomputers.org/doku.php?id=software:firmwareos:romwbw:apps) |
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- [RomWBW |
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Errata](https://www.retrobrewcomputers.org/doku.php?id=software:firmwareos:romwbw:errata) |
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- [RomWBW Architecture |
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Document](https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=software:firmwareos:romwbw:romwbw_architecture.pdf) |
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- [RomWBW |
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Applications](https://www.retrobrewcomputers.org/doku.php?id=software:firmwareos:romwbw:apps) |
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- [RomWBW |
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Errata](https://www.retrobrewcomputers.org/doku.php?id=software:firmwareos:romwbw:errata) |
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# Overview |
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@ -27,28 +27,28 @@ RomWBW provides a complete software system for a wide variety of |
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hobbyist Z80/Z180 CPU-based systems produced by these developer |
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communities: |
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- [RetroBrew Computers](https://www.retrobrewcomputers.org) |
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- [RC2014](https://rc2014.co.uk) |
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- [retro-comp](https://groups.google.com/forum/#!forum/retro-comp) |
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- [RetroBrew Computers](https://www.retrobrewcomputers.org) |
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- [RC2014](https://rc2014.co.uk) |
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- [retro-comp](https://groups.google.com/forum/#!forum/retro-comp) |
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General features include: |
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- Banked memory services for several banking designs |
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- Disk drivers for RAM, ROM, Floppy, IDE, CF, and SD |
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- Serial drivers including UART (16550-like), ASCI, ACIA, SIO |
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- Video drivers including TMS9918, SY6545, MOS8563, HD6445 |
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- Real time clock drivers including DS1302, BQ4845 |
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- Multiple OS support including CP/M 2.2, ZSDOS, CP/M 3, ZPM3 |
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- Built-in VT-100 terminal emulation support |
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- Banked memory services for several banking designs |
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- Disk drivers for RAM, ROM, Floppy, IDE, CF, and SD |
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- Serial drivers including UART (16550-like), ASCI, ACIA, SIO |
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- Video drivers including TMS9918, SY6545, MOS8563, HD6445 |
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- Real time clock drivers including DS1302, BQ4845 |
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- Multiple OS support including CP/M 2.2, ZSDOS, CP/M 3, ZPM3 |
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- Built-in VT-100 terminal emulation support |
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RomWBW is distributed as both source code and pre-built ROM and disk |
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images. Some of the provided software can be launched directly from the |
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ROM firmware itself: |
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- System Monitor |
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- Operating Systems (CP/M 2.2, ZSDOS) |
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- ROM BASIC (Nascom BASIC and Tasty BASIC) |
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- ROM Forth |
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- System Monitor |
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- Operating Systems (CP/M 2.2, ZSDOS) |
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- ROM BASIC (Nascom BASIC and Tasty BASIC) |
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- ROM Forth |
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A dynamic disk drive letter assignment mechanism allows mapping |
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operating system drive letters to any available disk media. |
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@ -209,10 +209,10 @@ modular approach to implementing device drivers and presenting devices |
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to the operating system. In general, all devices are classified as one |
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of the following: |
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- Disk (Hard Disk, CF Card, SD Card, RAM/ROM Disk, etc.) |
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- Character (Serial Ports, Parallel Ports, etc.) |
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- Video (Video Display/Keyboard Interfaces) |
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- RTC/NVRAM (Real Time Clock, Non-volatile RAM) |
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- Disk (Hard Disk, CF Card, SD Card, RAM/ROM Disk, etc.) |
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- Character (Serial Ports, Parallel Ports, etc.) |
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- Video (Video Display/Keyboard Interfaces) |
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- RTC/NVRAM (Real Time Clock, Non-volatile RAM) |
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HBIOS uses the concept of unit numbers to present a complex set of |
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hardware devices to the operating system. As an example, a typical |
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@ -747,17 +747,17 @@ most stable and you are less likely to encounter problems. |
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### Notes |
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- You can change media, but it must be done while at the OS command |
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prompt and you **must** warm start CP/M by pressing ctrl-c. This is |
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a CP/M 2.2 constraint and is well documented in the DRI manuals. |
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- You can change media, but it must be done while at the OS command |
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prompt and you **must** warm start CP/M by pressing ctrl-c. This is a |
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CP/M 2.2 constraint and is well documented in the DRI manuals. |
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- The original versions of DDT, DDTZ, and ZSID used the RST 38 vector |
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which conflicts with interrupt mode 1 use of this vector. The DDT, |
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DDTZ, and ZSID applications in RomWBW have been modified to use RST |
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30 to avoid this issue. |
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- The original versions of DDT, DDTZ, and ZSID used the RST 38 vector |
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which conflicts with interrupt mode 1 use of this vector. The DDT, |
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DDTZ, and ZSID applications in RomWBW have been modified to use RST 30 |
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to avoid this issue. |
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- Z-System applications will not run under CP/M 2.2. For example, the |
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`LDDS` date stamper will not run. |
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- Z-System applications will not run under CP/M 2.2. For example, the |
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`LDDS` date stamper will not run. |
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## ZSDOS 1.1 |
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@ -775,14 +775,13 @@ Manual.pdf”). |
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### Notes |
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- Although most CP/M 2.2 applications will run under Z-System, some |
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may not work as expected. The best example is PIP which is not aware |
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of the ZSDOS paths and will fail in some scenarios (use `COPY` |
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instead). |
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- Although most CP/M 2.2 applications will run under Z-System, some may |
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not work as expected. The best example is PIP which is not aware of |
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the ZSDOS paths and will fail in some scenarios (use `COPY` instead). |
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- Although ZSDOS can recognize a media change in some cases, it will |
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not always work. You should only change media at a command prompt |
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and be sure to warm start the OS with a ctrl-c. |
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- Although ZSDOS can recognize a media change in some cases, it will not |
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always work. You should only change media at a command prompt and be |
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sure to warm start the OS with a ctrl-c. |
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## NZCOM Automatic Z-System |
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@ -803,8 +802,8 @@ RomWBW Doc directory. |
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### Notes |
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- There is no `DIR` command, you must use `SDZ` instead. If you don’t |
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like this, look into the ALIAS facility. |
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- There is no `DIR` command, you must use `SDZ` instead. If you don’t |
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like this, look into the ALIAS facility. |
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## Digital Research CP/M 3 |
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@ -820,19 +819,18 @@ tracks. `CPMLDR.SYS` chain loads `CPM3.SYS`. |
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### Notes |
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- The `DATE` command cannot yet be used to **set** the RTC. The RTC is |
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used to read the current date/time for file stamping, etc. You can |
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use the `RTC` app to set the RTC clock. |
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- The `DATE` command cannot yet be used to **set** the RTC. The RTC is |
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used to read the current date/time for file stamping, etc. You can use |
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the `RTC` app to set the RTC clock. |
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- The `COPYSYS` command described in the DRI CP/M 3 documentation is |
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not provided with RomWBW. The RomWBW `SYSCOPY` command is used |
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instead. |
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- The `COPYSYS` command described in the DRI CP/M 3 documentation is not |
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provided with RomWBW. The RomWBW `SYSCOPY` command is used instead. |
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- Although CP/M 3 is generally able to run CP/M 2.2 programs, this is |
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not universally true. This is especially true of the utility |
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programs included with the operating system. For example, the |
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`SUBMIT` program of CP/M 3 is completely different from the `SUBMIT` |
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program of CP/M 2.2. |
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- Although CP/M 3 is generally able to run CP/M 2.2 programs, this is |
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not universally true. This is especially true of the utility programs |
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included with the operating system. For example, the `SUBMIT` program |
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of CP/M 3 is completely different from the `SUBMIT` program of CP/M |
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2.2. |
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## Simeon Cran’s ZPM3 |
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@ -844,14 +842,14 @@ tracks of the disk. |
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### Notes |
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- `ZPMLDR` is equivalent to CPMLDR. Both are included. Previously, |
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ZPMLDR had issues that prevented it from properly booting RomWBW |
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ZPM3. However, those issues have been resolved. |
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- `ZPMLDR` is equivalent to CPMLDR. Both are included. Previously, |
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ZPMLDR had issues that prevented it from properly booting RomWBW ZPM3. |
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However, those issues have been resolved. |
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- The ZPM operating system is contained in the file called CPM3.SYS |
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which is confusing, but this is as intended by the ZPM3 |
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distribution. I believe it was done this way to make it easier for |
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users to transition from CP/M 3 to ZPM3. |
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- The ZPM operating system is contained in the file called CPM3.SYS |
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which is confusing, but this is as intended by the ZPM3 distribution. |
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I believe it was done this way to make it easier for users to |
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transition from CP/M 3 to ZPM3. |
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## FreeRTOS |
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@ -1036,10 +1034,10 @@ images. |
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While John is likely to enhance UNA over time, there are currently a few |
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things that UNA does not support: |
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- Floppy Drives |
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- Terminal Emulation |
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- Zeta 1, N8, RC2014, Easy Z80, and Dyno Systems |
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- Some older support boards |
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- Floppy Drives |
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- Terminal Emulation |
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- Zeta 1, N8, RC2014, Easy Z80, and Dyno Systems |
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- Some older support boards |
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The UNA version embedded in RomWBW is the latest production release of |
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UNA. RomWBW will be updated with John’s upcoming UNA release with |
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@ -1145,89 +1143,86 @@ If the disk is bootable, you need to update the system image on the disk |
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using the procedure described below corresponsing to the operating |
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system on your disk. |
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- **CP/M 2.2** |
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- **CP/M 2.2** |
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Boot to CP/M 2.2 from ROM, then use `SYSCOPY` to update the system |
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image on **all** CP/M 2.2 boot disks/slices. The CP/M 2.2 system |
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image is called CPM.SYS and is found on the ROM disk. For example: |
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Boot to CP/M 2.2 from ROM, then use `SYSCOPY` to update the system |
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image on **all** CP/M 2.2 boot disks/slices. The CP/M 2.2 system image |
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is called CPM.SYS and is found on the ROM disk. For example: |
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`B>SYSCOPY C:=CPM.SYS` |
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`B>SYSCOPY C:=CPM.SYS` |
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- **ZSDOS** |
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- **ZSDOS** |
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Boot to Z-System from ROM, then use `SYSCOPY` to update the system |
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image on **all** ZSDOS boot disks/slices. The ZSDOS system image is |
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called ZSYS.SYS and is found on the ROM disk. For example: |
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Boot to Z-System from ROM, then use `SYSCOPY` to update the system |
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image on **all** ZSDOS boot disks/slices. The ZSDOS system image is |
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called ZSYS.SYS and is found on the ROM disk. For example: |
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`B>SYSCOPY C:=ZSYS.SYS` |
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`B>SYSCOPY C:=ZSYS.SYS` |
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- **NZCOM** |
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- **NZCOM** |
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NZCOM runs on top of either CP/M 2.2 or ZSDOS. By default, the |
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RomWBW disk image for NZCOM uses ZSDOS. Follow the corresponding |
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procedure above to update the system image on the NZCOM boot |
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disks/slices. |
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NZCOM runs on top of either CP/M 2.2 or ZSDOS. By default, the RomWBW |
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disk image for NZCOM uses ZSDOS. Follow the corresponding procedure |
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above to update the system image on the NZCOM boot disks/slices. |
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- **CP/M 3** |
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- **CP/M 3** |
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CP/M 3 uses a multi-step boot process involving multiple files. The |
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CP/M 3 boot files are not included on the ROM disk due to space |
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constraints. You will need to transfer the files to your system from |
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the RomWBW distribution directory Binary\CPM3. |
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CP/M 3 uses a multi-step boot process involving multiple files. The |
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CP/M 3 boot files are not included on the ROM disk due to space |
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constraints. You will need to transfer the files to your system from |
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the RomWBW distribution directory Binary\CPM3. |
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After this is done, you will need to use `SYSCOPY` to place the CP/M |
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3 loader image on the boot tracks of all CP/M 3 boot disks/slices. |
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The loader image is called `CPMLDR.SYS`. You must then copy (at a |
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minimum) `CPM3.SYS` and `CCP.COM` onto the disk/slice. Assuming you |
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copied the CP/M 3 boot files onto your RAM disk at A:, you would |
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use: |
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After this is done, you will need to use `SYSCOPY` to place the CP/M 3 |
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loader image on the boot tracks of all CP/M 3 boot disks/slices. The |
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loader image is called `CPMLDR.SYS`. You must then copy (at a minimum) |
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`CPM3.SYS` and `CCP.COM` onto the disk/slice. Assuming you copied the |
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CP/M 3 boot files onto your RAM disk at A:, you would use: |
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A>B:SYSCOPY C:=CPMLDR.SYS |
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A>B:COPY CPM3.SYS C: |
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A>B:COPY CCP.COM C: |
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A>B:SYSCOPY C:=CPMLDR.SYS |
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A>B:COPY CPM3.SYS C: |
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A>B:COPY CCP.COM C: |
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- **ZPM3** |
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- **ZPM3** |
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ZPM3 uses a multi-step boot process involving multiple files. The |
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ZPM3 boot files are not included on the ROM disk due to space |
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constraints. You will need to transfer the files to your system from |
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the RomWBW distribution directory Binary\ZPM3. |
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ZPM3 uses a multi-step boot process involving multiple files. The ZPM3 |
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boot files are not included on the ROM disk due to space constraints. |
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You will need to transfer the files to your system from the RomWBW |
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distribution directory Binary\ZPM3. |
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After this is done, you will need to use `SYSCOPY` to place the ZPM3 |
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loader image on the boot tracks of all ZPM3 boot disks/slices. The |
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loader image is called `ZPMLDR.SYS`. You must then copy (at a |
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minimum) `CPM3.SYS`, `ZCCP.COM`, `ZINSTAL.ZPM`, and `STARTZPM.COM` |
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onto the disk/slice. Assuming you copied the ZPM3 boot files onto |
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your RAM disk at A:, you would use: |
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After this is done, you will need to use `SYSCOPY` to place the ZPM3 |
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loader image on the boot tracks of all ZPM3 boot disks/slices. The |
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loader image is called `ZPMLDR.SYS`. You must then copy (at a minimum) |
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`CPM3.SYS`, `ZCCP.COM`, `ZINSTAL.ZPM`, and `STARTZPM.COM` onto the |
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disk/slice. Assuming you copied the ZPM3 boot files onto your RAM disk |
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at A:, you would use: |
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A>B:SYSCOPY C:=ZPMLDR.SYS |
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A>B:COPY CPM3.SYS C: |
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A>B:COPY ZCCP.COM C: |
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A>B:COPY ZINSTAL.ZPM C: |
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A>B:COPY STARTZPM.COM C: |
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A>B:SYSCOPY C:=ZPMLDR.SYS |
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A>B:COPY CPM3.SYS C: |
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A>B:COPY ZCCP.COM C: |
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A>B:COPY ZINSTAL.ZPM C: |
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A>B:COPY STARTZPM.COM C: |
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You may be wondering if the reference to `CPM3.SYS` is a typo. It is |
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not. The ZPM3 main system code file is called `CPM3.SYS` which is |
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the same name as CP/M 3 uses, but the file contents are not the |
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same. |
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You may be wondering if the reference to `CPM3.SYS` is a typo. It is |
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not. The ZPM3 main system code file is called `CPM3.SYS` which is the |
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same name as CP/M 3 uses, but the file contents are not the same. |
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Finally, if you have copies of any of the RomWBW custom applications on |
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your hard disk, you need to update them with the latest copies. The |
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following applications are found on your ROM disk. Use COPY to copy them |
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over any older versions of the app on your disk: |
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- ASSIGN.COM |
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- SYSCOPY.COM |
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- MODE.COM |
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- FDU.COM (was FDTST.COM) |
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- FORMAT.COM |
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- XM.COM |
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- FLASH.COM |
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- FDISK80.COM |
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- TALK.COM |
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- RTC.COM |
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- TIMER.COM |
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- INTTEST.COM |
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- ASSIGN.COM |
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- SYSCOPY.COM |
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- MODE.COM |
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- FDU.COM (was FDTST.COM) |
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- FORMAT.COM |
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- XM.COM |
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- FLASH.COM |
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- FDISK80.COM |
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- TALK.COM |
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- RTC.COM |
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- TIMER.COM |
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- INTTEST.COM |
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For example: `B>COPY ASSIGN.COM C:` |
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@ -1236,8 +1231,8 @@ you are using any of these you will need to transfer them to your system |
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and then update all copies. These applications are found in the |
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Binary\Apps directory of the distribution and in all of the disk images. |
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- FAT.COM |
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- TUNE.COM |
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- FAT.COM |
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- TUNE.COM |
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## System Update |
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@ -1251,11 +1246,11 @@ and CP/M system. |
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A System Update may be more favorable than a System Upgrade in cases |
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such as: |
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- Overwriting of the ROM drive is not desired. |
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- Space is unavailable to hold a full ROMWBW ROM. |
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- To mimimize time taken to transfer and flash a full ROM. |
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- Configuration changes are only minor and do not impact disk |
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applications. |
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- Overwriting of the ROM drive is not desired. |
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- Space is unavailable to hold a full ROMWBW ROM. |
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- To mimimize time taken to transfer and flash a full ROM. |
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- Configuration changes are only minor and do not impact disk |
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applications. |
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The ROMWBW build process generates a system upgrade file along with the |
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normal ROM image and can be identified by the extension “.upd”. It will |
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@ -1306,22 +1301,22 @@ continue the maintenance of these applications and they have become |
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unusable due to changes within RomWBW. As of RomWBW 2.6, these |
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applications are no longer provided. |
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|
- David Giles contributed support for the CSIO support in the SD Card |
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driver. |
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- Ed Brindley contributed some of the code that supports the RC2014 |
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platform. |
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|
- Phil Summers contributed the Forth and BASIC adaptations in ROM, the |
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|
AY-3-8910 sound driver as well as a long list of general code |
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|
enhancements. |
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|
- Phillip Stevens contributed support for FreeRTOS. |
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|
- Curt Mayer contributed the original Linux / MacOS build process. |
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|
- UNA BIOS and FDISK80 are the products of John Coffman. |
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|
- FLASH4 is a product of Will Sowerbutts. |
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|
- CLRDIR is a product of Max Scane. |
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|
- Tasty Basic is a product of Dimitri Theulings. |
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|
- Dean Netherton contributed the sound driver interface and the |
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|
SN76489 sound driver. |
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|
- The RomWBW Disk Catalog document was produced by Mykl Orders. |
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|
- David Giles contributed support for the CSIO support in the SD Card |
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|
|
driver. |
|
|
|
- Ed Brindley contributed some of the code that supports the RC2014 |
|
|
|
platform. |
|
|
|
- Phil Summers contributed the Forth and BASIC adaptations in ROM, the |
|
|
|
AY-3-8910 sound driver as well as a long list of general code |
|
|
|
enhancements. |
|
|
|
- Phillip Stevens contributed support for FreeRTOS. |
|
|
|
- Curt Mayer contributed the original Linux / MacOS build process. |
|
|
|
- UNA BIOS and FDISK80 are the products of John Coffman. |
|
|
|
- FLASH4 is a product of Will Sowerbutts. |
|
|
|
- CLRDIR is a product of Max Scane. |
|
|
|
- Tasty Basic is a product of Dimitri Theulings. |
|
|
|
- Dean Netherton contributed the sound driver interface and the SN76489 |
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|
|
sound driver. |
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|
- The RomWBW Disk Catalog document was produced by Mykl Orders. |
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Contributions of all kinds to RomWBW are very welcome. |
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@ -1372,12 +1367,11 @@ All contributions to RomWBW are subject to this license. |
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The best way to get assistance with RomWBW or any aspect of the |
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|
RetroBrew Computers projects is via the community forums: |
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|
- [RetroBrew Computers |
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|
Forum](https://www.retrobrewcomputers.org/forum/) |
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|
- [RC2014 Google |
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|
|
Group](https://groups.google.com/forum/#!forum/rc2014-z80) |
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|
|
- [retro-comp Google |
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|
|
Group](https://groups.google.com/forum/#!forum/retro-comp) |
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|
|
- [RetroBrew Computers Forum](https://www.retrobrewcomputers.org/forum/) |
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|
|
- [RC2014 Google |
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|
|
Group](https://groups.google.com/forum/#!forum/rc2014-z80) |
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|
|
- [retro-comp Google |
|
|
|
Group](https://groups.google.com/forum/#!forum/retro-comp) |
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|
Submission of issues and bugs are welcome at the [RomWBW GitHub |
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Repository](https://github.com/wwarthen/RomWBW). |
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Wayne Warthen
3 years ago