rom4x/rom5x/README.md

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2017-01-29 23:54:00 +00:00
# ROM 5X by MG
## DO NOT EVEN TRY THIS YET :-)
**Warning:** This has not been tested on an emulator or a real Apple IIc Plus.
This is a patch for the Apple IIc Plus firmware that tries to recover a battery-backed
RAM disk upon cold start. Because of the limited space in the Apple IIc ROM. it does not
have the complete feature set of ROM 4X for the (non-Plus) //c.
Upon cold start, the patch checks for a potentially bootable RAM disk and restores the
appropriate screen holes to prevent it from being destroyed and to enable boot. If a
RAMdisk is recovered, a flashing "R" will appear in the lower left corner of the screen.
To prevent the check and recovery, power on the machine with the Option key held down.
A flashing "O" will appear in the lower left corner of the screen and the system will
boot without checking for or recovering any RAM disk.
2017-01-29 23:38:12 +00:00