mirror of https://github.com/mgcaret/romex.git
35 lines
1.8 KiB
Markdown
35 lines
1.8 KiB
Markdown
# ROM eX
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ROM eX is a **BETA** enhancement to the enhanced Apple //e firmware ROM.
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## Features
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- Upon Control+CA/Option+Reset, presents a menu allowing you to choose to enter the monitor or start the boot a specific slot.
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- Menu displays the type of card found in the slot.
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- Menu identifies Apple II workstation cards and correctly boots them by prompting to press open-apple to start the boot.
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- Delete key works like the left arrow in programs that read input lines using the monitor ROM.
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## Tradeoffs/Flavors
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Unlike the Apple //c firmware, there is no free space in the //e firmware. Therefore sacrifices must be made. With that in mind, ROM eX comes in two flavors:
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- Sacrificing the tape code ('no_tape').
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- This version has a terse menu in order to fit in the available space.
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- Sacrificing the diagnostic code ('no_diags').
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- This version has a nicer menu that takes advantage of available space.
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## Building
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You must have Ruby and Rake installed, the CC65 suite, and probably some other things. Review the Rakefile. Author's development host runs MacOS X with the command line developer tools installed.
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Change into the directory for your desired flavor and type 'rake' for a single ROM suitable for emulation or the later //e's CF ROM socket. Type 'rake split" to also get ROMs suitable for the CD and EF ROM sockets on earlier //es.
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## Installing
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This ROM can be run in emulators that allow specifying a custom ROM image. It is tested on Virtual ][.
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Note that as of 2/7/2019, it has *NOT* been tested on actual hardware, though there is no reason it should not work.
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To install in real hardware, the appropriate EPROMs must be programmed and installed in the system. A 27SF512 may work in //es equipped with a CF ROM socket, and 'rake sf512' will generate such an image (with 4 copies of the ROM in it).
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