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ez80: adjusted I/O bus timings

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Dean Netherton
2024-09-20 16:39:56 +10:00
parent d3019dbb88
commit a69797d0cf
1 changed files with 6 additions and 3 deletions
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9
Source/HBIOS/cfg_RCEZ80.asm
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@@ -414,9 +414,12 @@ EZ80_MEM_MIN_WS .SET 0 ; MINIMUM WAIT STATES TO APPLY, IF EZ80_WSMD_TYP = EZ80W
;
; BUS TIMING FOR EXTERNAL I/O ACCESS (CS2)
EZ80_IO_CYCLES .SET 4 ; IO BUS CYCLES (1-15) TO APPLY, IF EZ80_WSMD_TYP = EZ80WSMD_CYCLES
EZ80_IO_WS .SET 5 ; IO WAIT STATES (0-7) TO APPLY, IF EZ80_WSMD_TYP = EZ80WSMD_WAIT
EZ80_IO_MIN_NS .SET 320 ; CALCULATE AT BOOT TIME THE REQUIRED W/S OR B/C, IF EZ80_WSMD_TYP = EZ80WSMD_CALC
EZ80_IO_MIN_WS .SET 6 ; MINIMUM WAIT STATES TO APPLY, IF EZ80_WSMD_TYP = EZ80WSMD_CALC
EZ80_IO_WS .SET 7 ; IO WAIT STATES (0-7) TO APPLY, IF EZ80_WSMD_TYP = EZ80WSMD_WAIT
EZ80_IO_MIN_NS .SET 250 ; CALCULATE AT BOOT TIME THE REQUIRED W/S OR B/C, IF EZ80_WSMD_TYP = EZ80WSMD_CALC
; THE MINMUM W/S SHOULD BE AT LEAST 1 GREATER THAN THE HOLD TRIGGER COUNT PROGRAMMED WITHIN THE PLD OF THE
; EZ80 INTERFACE MODULE. SEE THE EZ80-CPU.PLD FILE WITHIN THE EZ80 FIRMWARE CODE BASE
EZ80_IO_MIN_WS .SET 7 ; MINIMUM WAIT STATES TO APPLY, IF EZ80_WSMD_TYP = EZ80WSMD_CALC
;
; APPLY CYCLES, W/S OR CALCULATE CYCLES BASED ON DESIRED PERIOD
EZ80_WSMD_TYP .SET EZ80WSMD_CALC ; BUS WAIT STATE CONFIG: EZ80WSMD_[CALC|CYCLES|WAIT]