From 9a967e764b84cdd7a26c300035e8a30edd292a34 Mon Sep 17 00:00:00 2001 From: Luke Kenneth Casson Leighton Date: Fri, 11 Feb 2022 12:51:54 +0000 Subject: [PATCH] found chiselwatt ulx3s constraint file https://github.com/antonblanchard/chiselwatt/blob/master/constraints/ecp5-ulx3s.lpf --- constraints/ulx3s.lpf | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/constraints/ulx3s.lpf b/constraints/ulx3s.lpf index abbc94c..234c341 100644 --- a/constraints/ulx3s.lpf +++ b/constraints/ulx3s.lpf @@ -1,5 +1,6 @@ LOCATE COMP "ext_clk" SITE "G2"; -IOBUF PORT "ext_clk" IO_TYPE=LVCMOS33; +IOBUF PORT "ext_clk" IO_TYPE=LVCMOS33 PULLMODE=NONE; +FREQUENCY PORT "ext_clk" 25 MHZ; LOCATE COMP "ext_rst" SITE "D6"; IOBUF PORT "ext_rst" PULLMODE=UP IO_TYPE=LVCMOS33 DRIVE=4; @@ -7,13 +8,13 @@ IOBUF PORT "ext_rst" PULLMODE=UP IO_TYPE=LVCMOS33 DRIVE=4; LOCATE COMP "uart0_txd" SITE "L4"; LOCATE COMP "uart0_rxd" SITE "M1"; -IOBUF PORT "uart0_txd" IO_TYPE=LVCMOS33; -IOBUF PORT "uart0_rxd" IO_TYPE=LVCMOS33; +IOBUF PORT "uart0_txd" IO_TYPE=LVCMOS33 PULLMODE=UP DRIVE=4; +IOBUF PORT "uart0_rxd" IO_TYPE=LVCMOS33 PULLMODE=UP; LOCATE COMP "led_a" SITE "B2"; LOCATE COMP "led_b" SITE "C2"; LOCATE COMP "led_c" SITE "C1"; -IOBUF PORT "led_a" IO_TYPE=LVCMOS25 DRIVE=4; -IOBUF PORT "led_b" IO_TYPE=LVCMOS25 DRIVE=4; -IOBUF PORT "led_c" IO_TYPE=LVCMOS25 DRIVE=4; +IOBUF PORT "led_a" IO_TYPE=LVCMOS25 DRIVE=4 PULLMODE=NONE; +IOBUF PORT "led_b" IO_TYPE=LVCMOS25 DRIVE=4 PULLMODE=NONE; +IOBUF PORT "led_c" IO_TYPE=LVCMOS25 DRIVE=4 PULLMODE=NONE; -- 2.30.2