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feat(hardware.inc): Added flags for IIR

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This commit is contained in:
Gale Misery Faraday
2024-12-05 14:50:20 -06:00
parent 7d03e97d94
commit d787e63624
1 changed files with 6 additions and 1 deletions
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7
code/boot/src/hardware.inc
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@@ -38,7 +38,7 @@ UART_LSR EQU UART_BASE + 5 ; Line Status Register
UART_MSR EQU UART_BASE + 6 ; MODEM Status Register
UART_SCR EQU UART_BASE + 7 ; Scratch Register (Not for control just spare RAM)
; TODO: Flags for IIR, FCR
; TODO: Flags for FCR
; UART Flags for Interrupt Enable Register:
UARTF_IER_ERBFI EQU %10000000 ; Enable Received Data Available Interrupt
@@ -46,6 +46,11 @@ UARTF_IER_ETBEI EQU %01000000 ; Enable Transmitter Holding Register Empty Interr
UARTF_IER_ELSI EQU %00100000 ; Enable Receiver Line Status Interrupt
UARTF_IER_EDSSI EQU %00010000 ; Enable MODEM Status Interrupt
; UART Flags for Interrupt Ident Register:
UARTF_IIR_INP EQU %10000000 ; Reset if Interrupt Pending; 'INP' = Interrupt Not Pending
UARTF_IIR_IIDM EQU %01110000 ; Interrupt ID Mask
UARTF_IIR_FEM EQU %00000011 ; FIFOs Enabled Mask
; UART Flags for Line Control Register:
UARTF_LCR_8N1 EQU %11000000 ; 8n1 Serial Mode
UARTF_LCR_STB EQU %00100000 ; Stop Bits