Suggested Improvement: Replace file-based operations with raw sector read/write instead of waiting for file-name access
Use "B-R" and "B-W" commands to load and write sectors directly.
Example:
lda #18 ; Track number
sta $FB
lda #0 ; Sector number
sta $FC
lda #0 ; Buffer number
sta $FD
lda #"B" ; B-R command
jsr DiskSendCommand
increase buffer size or implement batching logic for efficiency.
larger memory buffers can reduce the number of I/O calls and improve performance.
Use efficient FREEMEM or allocate additional memory if possible
use IRQs for buffer optimization and FREEMEM management.
background Data Transfer: Handle disk I/O asynchronously to keep the buffer full while the main program runs.
buffer Refilling: Refill the buffer automatically when it runs low, reducing latency.
dynamic FREEMEM Allocation: Switch between multiple buffers (e.g., double-buffering) for parallel I/O and processing.
timing-Based Batching: Trigger I/O during vertical blank interrupts (VBI) or raster line interrupts for better throughput.
IRQ_Handler:
lda BufferStatus ; Check buffer state
cmp #BUFFER_LOW_THRESHOLD ; If buffer is low
bcc DoneIRQ
jsr SectorReadRoutine ; Read next sector into FREEMEM
jsr UpdateBufferPointer ; Update buffer management
DoneIRQ:
rti
; In the main program, process data from the buffer:
MainLoop:
lda (BufferPointer),y ; Load data from buffer
sta ProcessingMemory,y ; Process data
iny
cmp BufferEndPointer
bne MainLoop
jmp WaitForIRQCompletion ; Wait for IRQ to refill the buffer
GUI64/Code/DiskOperations.asm
Line 762 in 99912bc
Suggested Improvement: Replace file-based operations with raw sector read/write instead of waiting for file-name access
Use "B-R" and "B-W" commands to load and write sectors directly.
Example:
lda #18 ; Track number
sta $FB
lda #0 ; Sector number
sta $FC
lda #0 ; Buffer number
sta $FD
lda #"B" ; B-R command
jsr DiskSendCommand
increase buffer size or implement batching logic for efficiency.
larger memory buffers can reduce the number of I/O calls and improve performance.
Use efficient FREEMEM or allocate additional memory if possible
use IRQs for buffer optimization and FREEMEM management.
background Data Transfer: Handle disk I/O asynchronously to keep the buffer full while the main program runs.
buffer Refilling: Refill the buffer automatically when it runs low, reducing latency.
dynamic FREEMEM Allocation: Switch between multiple buffers (e.g., double-buffering) for parallel I/O and processing.
timing-Based Batching: Trigger I/O during vertical blank interrupts (VBI) or raster line interrupts for better throughput.
IRQ_Handler:
lda BufferStatus ; Check buffer state
cmp #BUFFER_LOW_THRESHOLD ; If buffer is low
bcc DoneIRQ
jsr SectorReadRoutine ; Read next sector into FREEMEM
jsr UpdateBufferPointer ; Update buffer management
DoneIRQ:
rti
; In the main program, process data from the buffer:
MainLoop:
lda (BufferPointer),y ; Load data from buffer
sta ProcessingMemory,y ; Process data
iny
cmp BufferEndPointer
bne MainLoop
jmp WaitForIRQCompletion ; Wait for IRQ to refill the buffer