chibi/chibi-firmware
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base: chibi:7e9f18b2d240ecef6d0c85f5b8ab3a28342b493f
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chibi:main chibi:buzbee
chibi:v0.1.0
..
compare: chibi:dc3ab7025818e8585e29db82bc3f92f43d6bdeb3
Branches Tags
chibi:buzbee chibi:main
chibi:v0.1.0

2 Commits
7e9f18b2d2 ... dc3ab70258

Author SHA1 Message Date
Gale Faraday
dc3ab70258 fix(serial): INITUART now loads FCR values properly 2025-09-13 16:00:35 -05:00
Gale Faraday
97ff749e8b fix(reset): only check CC.Z when looping over stack init 2025-09-13 15:58:36 -05:00
2 changed files with 2 additions and 2 deletions
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2
src/reset.s
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@@ -28,7 +28,7 @@ NEXT@
sta STACK_BOTTOM,x ; Write a zero and progress to the next byte sta STACK_BOTTOM,x ; Write a zero and progress to the next byte
leax 1,x leax 1,x
cmpx #STACK_DEPTH ; See if we're at the top of the stack yet cmpx #STACK_DEPTH ; See if we're at the top of the stack yet
blo NEXT@ ; Loop if we aren't at the end yet bne NEXT@ ; Loop if we aren't at the end yet
lds #STACK_TOP ; Set S to top of newly cleared stack lds #STACK_TOP ; Set S to top of newly cleared stack
BOOTSCR BOOTSCR

2
src/serial.s
View File

@@ -28,7 +28,7 @@ INITUART
stb UART_DLL ; Write divisor LSB stb UART_DLL ; Write divisor LSB
puls b puls b
stb UART_LCR ; Write LCR stb UART_LCR ; Write LCR
lda UARTF_FCR_FE|UARTF_FCR_RFR|UARTF_FCR_XFR ; FIFO disable and clear lda #(UARTF_FCR_FE|UARTF_FCR_RFR|UARTF_FCR_XFR) ; FIFO disable and clear
sta UART_FCR sta UART_FCR
lda #0 lda #0
sta UART_IER ; Polled mode sta UART_IER ; Polled mode