URL https://opencores.org/ocsvn/wb4pb/wb4pb/trunk

Subversion Repositories wb4pb

[/] [wb4pb/] [trunk/] [asm/] [pbwbuart.psm] - Diff between revs 11 and 22

Rev 11	Rev 22
Line 169...	Line 169...
`LOAD wb_addr , UART_SR_ADDR ; setting status register address`	`LOAD wb_addr , UART_SR_ADDR ; setting status register address`
`CALL wb_rd`	`CALL wb_rd`
`; checking data present flag`	`; checking data present flag`
`TEST wb_data , UART_SR_RX_DP_FLAG`	`TEST wb_data , UART_SR_RX_DP_FLAG`
`; if flag is not set, returning immediately`	`; if flag is not set, returning immediately`
`JUMP NZ , uart_clr_buff_l0`	`RETURN Z`
`RETURN`
`; else reading out next byte and checking flag again`	`; else reading out next byte and checking flag again`
`uart_clr_buff_l0:`
`CALL uart_rd_byte`	`CALL uart_rd_byte`
`JUMP uart_clr_buff`	`JUMP uart_clr_buff`

`; register and flag addressing`	`; register and flag addressing`
`CONSTANT UART_RXTX_ADDR , 00 ; receive/transmit data pipe`	`CONSTANT UART_RXTX_ADDR , 00 ; receive/transmit data pipe`