- Modified SD driver to keep SD card clock consistently fast after card init. This only seemed to effect a Lexar 32GB uSD Card on CSIO interface. Thanks and credit to Richard Deane for reporting this.
- Improved hard disk layout documentation.
- Rearranged HBIOS code to improve colocation of related code.
- Implemented macros to improve control over assembly diagnostic output.
- Improved handling of diagnostic LEDs.
- Improved application boot bank management.
- Implemented application boot for Z280 systems.
- Moved Z280_BNKSEL into proxy.
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Added a new driver category for DSKY (Display/Keypad) devices. Existing DSKY devices were converted into drivers ICM and PKD. These devices were previously DSKY and DSKYNG.
This removes substantial code duplication and recovers significant space in romldr and dbgmon.
- Modified the Disk Device function call (DIODEVICE) to provide new attributes related to disk size and removability.
- Leveraged API change to allow handling drive assignment differently depending on ATAPI vs. ATA interface.
As suggested by Laszlo Szolnoki, I have added an additional CF Card signature to the IDE and PPIDE drivers. He also pointed out a deficiency in the disk size printing which has been addressed.
- The DSKY(ng) can display disk I/O activity as the system runs. This capability was implemented very erratically. This update overhauls the mechanism, makes it consistent, and implements it across all disk drivers.
- DSKYng now has same features as original DSKY including debug monitor
- Added support for MBS LEDs
- Elevated MBS to a platform instead of just a sub-config of SBC
Based on a logic analyzer trace from Andy Cooper, it appears that some SD cards want the unused CRC byte of the command packet to be 0xFF instead of the 0x00 filler I was using. Changed to put 0xFF in the CRC byte when unused.
Initialize CSIO speed at system startup. A constant called Z180_CNTR_DEF has been created to hold the default value. This value can be used by drivers to restore the default value after modification.