During testing of the NVRAM Switch changes (#451), I found some pre-existing stuff I didn't like, so I have tried to clean things up.
- BOOT_DEFAULT has been replaced by AUTO_CMD
- There is no longer a "default" boot loader command when pressing <enter>.
- An additional SD Module has been developed by Stephen Cousins. Since this module will be distributed as a kit, I think it makes sense to enable support by default. It will do nothing on systems without an SD Module.
- Per Mark Pruden, corrected NZCOM user area specification for CP/M 2.2 files.
- Added some DRI files to CP/M 3 that are documented in the CP/M 3 documentation (LIB, LINK, MAC, RMAC, XREF). They are duplicated in CP/M 2.2 image, so this should be reviewed at some point.
- Added XREF to CP/M 2 disk image for consistency with CP/M 3.
- Updated Catalog.md per Mark Pruden to eliminate obsolete column from table.
* Moved DIOMED_MID variable - so it would be overwritten at start of main Calculation
* Removed code in SYS_GETDIOMED1A - since SYS_GETDIOMED6A did exactly this anyway
* Removed code that set MID_HD - since it would now already be set.
The delay function is delegated to the on-chip ROM.
The on-chip ROM uses a programmable reload timer that is calibrated for a range of
CPU frequencies and wait states.
The Z280 Interrupt Vector Table must be gin on a 4K boundary. Recent HBIOS changes caused it's location to result in a very large slack space. This update moves the Z280 IVT to a more memory efficient location.
- Support HEATH MSX Graphics card in HBIOS
- Support HEATH MSX Graphics card in TUNE app
- Startup HEATH at 8MHz to ensure hardware compatibility/detection