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
- Added RCEZ80 platform option to Build.ps1
- Added EZ80 config settings to MASTER config (required to get build to work for some situations)
- Modified a .EQU in cfg_RCEZ80.asm to a .SET. After adding config setting to MASTER config, the .EQU was causing a redefinition error.
- I have temporarily removed some "TRANSLATE" lines in ez80uart.asm. They were attempting to place a value greater that 0xFFFF in a register and generated an assembly error.
- Modified a few JR instructions in hbios.asm to JP due to out-of-range errors.
- Modified std.asm to "nest" a conditional. The Windows assembler does not ignore the remainder of a complex conditional when it should.
- Modified tms.asm to replace the PRTS macro with alternative lines. The Windows assembler cannot handle a string longer than about 8 characters in a macro argument.
- Added the TIMER utility to the ROM disk. Not sure what happened there. It was included in the Windows build, but not the Linux build. There is room for it, so I added it to the Linux build to get a binary exact build compare.
- SIOINTS allows disabling use of interrupts in the SIO driver when interrupts are enabled globally. It will not allow you to enable SIO interrupts if interrupts are globally disabled (INTMODE 0).
Changes to support a modified Prolog Keypad and LCD driver card - Heavily inspired by the lcd.asm module, but separated out to allow for future keyboard support.
