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Reduce wait from SD Card.

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This commit is contained in:
Matthieu Bucchianeri
2025-02-08 00:42:33 -08:00
committed by Ted Fried
parent 9398846c13
commit 671b6e8153
2 changed files with 14 additions and 14 deletions
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18
XTMax/Drivers/BootROM/bootrom.asm
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@@ -527,10 +527,10 @@ func_02_read_sector:
call print_string
%endif
mov dx, 0x280 ; data port
mov cx, 1000 ; timeout
mov cx, 50000 ; timeout (50ms)
jmp .receive_token_no_delay
.receive_token:
call delay_100us
call delay_us
.receive_token_no_delay:
in al, dx
cmp al, 0xfe
@@ -678,10 +678,10 @@ cpu 8086
mov ax, wait_msg
call print_string
%endif
mov cx, 2500 ; timeout
mov cx, 50000 ; timeout (50ms)
jmp .receive_status_no_delay
.receive_status:
call delay_100us
call delay_us
.receive_status_no_delay:
in al, dx
cmp al, 0xff
@@ -705,10 +705,10 @@ cpu 8086
mov ax, wait_msg
call print_string
%endif
mov cx, 2500 ; timeout
mov cx, 50000 ; timeout (50ms)
jmp .receive_finish_no_delay
.receive_finish:
call delay_100us
call delay_us
.receive_finish_no_delay:
in al, dx
test al, al
@@ -1225,14 +1225,14 @@ send_sd_read_write_cmd:
;
;
; Wait 100 microseconds.
; Wait 1 microseconds.
; out: AX = <TRASH>
; FL = <TRASH>
delay_100us:
delay_us:
push cx
push dx
xor cx, cx
mov dx, 100 ; microseconds
mov dx, 1 ; microseconds
mov ah, 0x86 ; wait
int 0x15
pop dx