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Added support for C1/C3 clock calculation

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This commit is contained in:
Marcus Agehall 2021-10-14 16:41:35 +02:00
parent 2c2b91e1bd
commit 36afc41b13
7 changed files with 27672 additions and 27663 deletions
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11404
rtl/EPM240_bitstream.svf
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9650
rtl/EPM240_experimental.svf
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19886
rtl/bitstream.svf
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14374
rtl/bitstream_experimental.svf
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10
rtl/pistorm.qsf
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@ -110,10 +110,14 @@ set_location_assignment PIN_73 -to M68K_UDS_n
set_location_assignment PIN_74 -to M68K_LDS_n
set_location_assignment PIN_75 -to M68K_RW
set_location_assignment PIN_76 -to M68K_DTACK_n
set_location_assignment PIN_51 -to CLK_SEL
set_location_assignment PIN_99 -to M68K_C1
set_location_assignment PIN_100 -to M68K_C3
set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to M68K_IPL_n[0]
set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to M68K_IPL_n[1]
set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to M68K_IPL_n[2]
set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to M68K_IPL_n[0]
set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to M68K_IPL_n[1]
set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to M68K_IPL_n[2]
set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to CLK_SEL
set_global_assignment -name AUTO_RESTART_CONFIGURATION OFF
set_global_assignment -name ENABLE_OCT_DONE OFF

3
rtl/pistorm.sdc
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@ -41,7 +41,8 @@ set_time_format -unit ns -decimal_places 3
create_clock -name {PI_CLK} -period 5.000 [get_ports {PI_CLK}]
create_clock -name {M68K_CLK} -period 141.000 [get_ports {M68K_CLK}]
create_clock -name {M68K_C1} -period 282.000 [get_ports {M68K_C1}]
create_clock -name {M68K_C3} -period 282.000 [get_ports {M68K_C3}]
#**************************************************************
# Create Generated Clock

8
rtl/pistorm.v
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@ -46,13 +46,17 @@ module pistorm(
input M68K_BR_n,
output reg M68K_BG_n,
input M68K_BGACK_n
input M68K_BGACK_n,
input M68K_C1,
input M68K_C3,
input CLK_SEL
);
wire c200m = PI_CLK;
reg [2:0] c7m_sync;
// wire c7m = M68K_CLK;
wire c7m = c7m_sync[2];
wire c1c3_clk = !(M68K_C1 ^ M68K_C3);
localparam REG_DATA = 2'd0;
localparam REG_ADDR_LO = 2'd1;
@ -122,7 +126,7 @@ module pistorm(
reg a0;
always @(posedge c200m) begin
c7m_sync <= {c7m_sync[1:0], M68K_CLK};
c7m_sync <= {c7m_sync[1:0], (CLK_SEL?M68K_CLK:c1c3_clk)};
end
wire c7m_rising = !c7m_sync[2] && c7m_sync[1];