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221 lines
9.4 KiB
221 lines
9.4 KiB
***********************************************************************
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*** ***
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*** R o m W B W ***
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*** ***
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*** Z80/Z180 System Software ***
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*** ***
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***********************************************************************
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This directory ("Binary") is part of the RomWBW System Software
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distribution archive. Refer to the ReadMe.txt file in this
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directory for more information on the overall contents of the
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directory.
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When distributed, RomWBW contains a set of pre-built ROM images that
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are ready to program onto the EEPROM of any of the Z80/Z180 based
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RetroBrew Computers CPU boards. Additionally, any custom built ROM
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images will be placed in this directory.
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All of the pre-built ROM images are 512KB. This size is compatible
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with all of the Z80/Z180 systems. Some systems can accept different
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size ROM images. Creating alternative sizes requires a custom ROM
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build (see ReadMe.txt in the Source directory).
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It is critical that the right ROM Imgae be selected for the target
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platform being used. The table below indicates the correct ROM
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image to use for each platform:
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SBC V1/V2 SBC_std.rom
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SBC SimH SBC_simh.rom
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Zeta V1 ZETA_std.rom
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Zeta V2 ZETA2_std.rom
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N8 N8_std.rom
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Mark IV MK4_std.rom
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RC2014 w/ Z80 RCZ80_std.rom
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RC2014 w/ Z180 RCZ180_nat.rom (native Z180 memory addressing)
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RC2014 w/ Z180 RCZ180_ext.rom (external 512K RAM/ROM module)
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SC-series SC126, SC130, SC131
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Easy Z80 EZZ180_std.rom
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Dyno DYNO_std.rom
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You will find there is one additional ROM image called
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"UNA_std.rom". This ROM image is an UNA-based RomWBW ROM image. As
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such, this ROM image can be used on any Z80/Z180 platform supported
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by John Coffman's UNA BIOS. Refer to RetroBrew Computers Wiki for
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more information on UNA hardware support.
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For each of the ROM Images (".rom"), there are corresponding files
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with the extensions of ".com" and ".img". The .com variant can be
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copied to a functional RomWBW-based system and executed like a
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normal application under CP/M or Z-System. This will load the new
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ROM on-the-fly. It is an excellent way to test a ROM Image before
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actually burning it. Similarly, the .img files can be loaded using
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the UNA FAT loader for testing.
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All of the standard ROM Images are configured for:
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- 512KB ROM Disk
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- 512KB RAM Disk
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- 38.4Kbps baud serial console (*)
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- Auto-discovery of all serial ports
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* RC2014 and Stephen Cousins' kits run at 115,200Kbps baud
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All hard disk type devices (IDE, PPIDE, CF Card, SD Card) will be
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automatically assigned at least two drive letters per device. The
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drive letters will refer to the first 2 slices of the device. The
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ASSIGN command can be used to display and reassign drives to disk
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devices and slices as desired.
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Standard ROM Image Notes
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------------------------
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The standard ROM images will detect and install support for certain
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devices and peripherals that are on-board or frequently used with
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each platform as documented below. If the device or peripheral is
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not detected at boot, the ROM will simply bypass support
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appropriately.
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SBC (SBC_std.rom):
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- CPU speed is detected at startup
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- Console on onboard UART serial port at 38400 baud
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- Includes support for PPIDE/CF Card(s) connected to on-board
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parallel port.
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- Includes support for CVDU and VGA3 boards. If detected at
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startup, support for video and keyboard is installed
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including VT-100/ANSI terminal emulation.
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- Auto-detects PropIO or PropIO V2 and installs associated
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video, keyboard and SD Card support if present.
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- If PropIO, PropIO V2, CVDU, or VGA hardware is detected,
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initial console output is determined by JP2. If JP2 is
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shorted, console will go to on-board serial port, if JP2
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is open, console will go to the detected video and keyboard
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ports.
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- SBC V1 has a known race condition in the bank switching
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circuit which is likely to cause system instability. SBC
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V2 does not have this issue.
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SBC (SBC_simh.rom):
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- SBC variant customized to run under SimH
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- Implments two emulated SimH hard disk images
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- Uses SimH RTC
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ZETA (ZETA_std.rom):
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- CPU speed is detected at startup
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- Console on onboard UART serial port at 38400 baud
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- Includes support for on-board floppy disk controller and
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two attached floppy disks.
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- Auto-detects ParPortProp and includes support for it if it
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is attached.
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- If ParPortProp is installed, initial console output is
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determined by JP1. If JP1 is shorted, console will go to
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on-board serial port, if JP1 is open, console will go to
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ParPortProp video and keyboard ports.
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ZETA2 (ZETA2_std.rom):
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- CPU speed is detected at startup
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- Console on onboard UART serial port at 38400 baud
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- Includes support for on-board floppy disk controller and
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two attached floppy disks.
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- Auto-detects ParPortProp and includes support for it if it
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is attached.
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- Uses CTC to generate periodic timer interrupts.
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- If ParPortProp is installed, initial console output is
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determined by JP1. If JP1 is shorted, console will go to
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on-board serial port, if JP1 is open, console will go to
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ParPortProp video and keyboard ports.
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N8 (N8_std.rom):
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- CPU speed is detected at startup
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- Console on Z180 onboard primary ASCI serial port at 38400 baud
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- Includes support for on-board floppy disk controller and
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two attached floppy disks.
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- Includes support for on-board TMS9918 video and keyboard
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including VT-100/ANSI terminal emulation.
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- Includes support for on-board SD Card as hard disk and
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assumes a production level N8 board (date code >= 2312).
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MK4 (MK4_std.rom):
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- CPU speed is detected at startup
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- Console on Z180 onboard primary ASCI serial port at 38400 baud
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- Includes support for on-board IDE port (CF Card via adapter).
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- Includes support for on-board SD Card port.
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- Auto-detects PropIO or PropIO V2 and installs associated
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video, keyboard and SD Card support if present.
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- Includes support for CVDU and VGA3 boards. If detected at
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startup, support for video and keyboard is installed
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including VT-100/ANSI terminal emulation.
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RCZ80 (RCZ80_std.rom):
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- Assumes CPU oscillator of 7.3728 MHz
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- Requires 512K RAM/ROM module
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- Auto detects Serial I/O Module (ACIA), Dual Serial
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Module (SIO/2), and EP Dual UART.
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- Console on whichever serial module is installed,
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order of priority is UART, SIO, then ACIA.
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- Baud rate is determined by hardware, but normally 115200.
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- Auto support for RC2014 Compact Flash Module
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- Auto support for RC2014 PPIDE Module
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- Support for Scott Baker SIO board may be enabled in config
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- Support for Scott Baker floppy controllers (SMC & WDC) may
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be enabled in config
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- Support for J.B. Lang TMS9918 video card may be enabled in config
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RCZ80 w/ KIO (RCZ80_kio.rom):
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- Save as RCZ80_std
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- Requires KIO module
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- SIO ports provided by KIO
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RCZ180 (RCZ180_nat.rom & RCZ180_ext.rom):
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- Assumes CPU oscillator of 18.432 MHz
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- Console on Z180 onboard primary ASCI serial port at 115200 baud
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- Auto support for RC2014 Compact Flash Module
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- Auto support for RC2014 PPIDE Module
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- Support for alternative serial modules may be enabled in config
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- Support for Scott Baker floppy controllers (SMC & WDC) may
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be enabled in config
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- Support for J.B. Lang TMS9918 video card may be enabled in config
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- You must pick the _nat or _ext variant depending on which
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memory module you are using:
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- RCZ180_nat.rom uses the built-in Z180 memory manager
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for use with memory modules allow direct physical
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addressing of memory, such as the SC119
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- RCZ180_ext.rom uses external bank management to access
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memory, such as the 512K RAM/ROM module.
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RCZ280 (RCZ280_ext.rom):
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*** Experimental ***
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- Assumes CPU oscillator of 24 MHz
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- Bus clock will be 6 MHz, so does not match RC2014 standard!!!
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- Requires 512K RAM/ROM module
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- Auto detects Serial I/O Module (ACIA), Dual Serial
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Module (SIO/2), and EP Dual UART.
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- Console on whichever serial module is installed,
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order of priority is UART, SIO, then ACIA.
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- Baud rate is determined by hardware, but normally 115200.
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- Auto support for RC2014 Compact Flash Module
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- Auto support for RC2014 PPIDE Module
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- Support for Scott Baker SIO board may be enabled in config
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- Support for Scott Baker floppy controllers (SMC & WDC) may
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be enabled in config
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- Support for J.B. Lang TMS9918 video card may be enabled in config
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SCZ180 (SCZ180_126.rom, SCZ180_130.rom, SCZ180_131.rom):
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- Same as RCZ180
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- Adds auto support for SPI SD Card
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- The 3 different variants of SCZ180 are provided to match the
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3 corresponding systems (SC126, SC130, and SC131) designed by
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Stephen Cousins.
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EZZ80 (EZZ80_std.rom):
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- Assumes CPU oscillator of 10.000 MHz
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- Console on primary SIO serial port at 115200 baud
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- Includes support for on-board SIO
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- Auto support for RC2014 Compact Flash Module
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- Auto support for RC2014 PPIDE Module
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DYNO (DYNO_std.rom):
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- Assumes CPU oscillator of 18.432 MHz
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- Console on Z180 onboard serial ports at 38400 baud
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- Includes support for BQ4842 RTC
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- Includes support for onboard PPIDE
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- Support for Dyno floppy controllers may be enabled in config
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