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Code Issues Releases Wiki Activity

CPUERR now cleared by CPU reset

Browse Source 
- pdp11_sequencer.vhd: CPUERR cleared by CRESET
- mminki.mac: added, procedure to initialize MMU, kernel I space only
- test_w11a_cpuerr.tcl: added, test cpuerr register
- added more README's
- editorial changes
This commit is contained in:
Walter F.J. Mueller
2016-12-27 23:35:12 +01:00
parent 92e149437d
commit 4fdb179dfc
11 changed files with 334 additions and 15 deletions
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19
rtl/w11a/pdp11_sequencer.vhd
View File

@@ -1,4 +1,4 @@
-- $Id: pdp11_sequencer.vhd 812 2016-10-03 18:39:50Z mueller $
-- $Id: pdp11_sequencer.vhd 831 2016-12-27 16:51:12Z mueller $
--
-- Copyright 2006-2016 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
--
@@ -18,10 +18,11 @@
-- Dependencies: ib_sel
-- Test bench: tb/tb_pdp11_core (implicit)
-- Target Devices: generic
-- Tool versions: ise 8.2-14.7; viv 2014.4-2016.1; ghdl 0.18-0.33
-- Tool versions: ise 8.2-14.7; viv 2014.4-2016.2; ghdl 0.18-0.33
--
-- Revision History:
-- Date Rev Version Comment
-- 2016-12-27 831 1.6.8 CPUERR now cleared with creset
-- 2016-10-03 812 1.6.7 always define DM_STAT_SE.snum
-- 2016-05-26 768 1.6.6 don't init N_REGS (vivado fix for fsm inference)
-- proc_snum conditional (vivado fsm workaround)
@@ -303,18 +304,28 @@ begin
if rising_edge(CLK) then
if GRESET = '1' then
R_STATUS <= cpustat_init;
R_CPUERR <= cpuerr_init;
R_IDSTAT <= decode_stat_init;
R_VMSTAT <= vm_stat_init;
else
R_STATUS <= N_STATUS;
R_CPUERR <= N_CPUERR;
R_IDSTAT <= N_IDSTAT;
R_VMSTAT <= VM_STAT;
end if;
end if;
end process proc_status;
-- ensure that CPUERR is reset with GRESET and CRESET
proc_cpuerr: process (CLK)
begin
if rising_edge(CLK) then
if GRESET = '1' or R_STATUS.creset = '1' then
R_CPUERR <= cpuerr_init;
else
R_CPUERR <= N_CPUERR;
end if;
end if;
end process proc_cpuerr;
proc_state: process (CLK)
begin
if rising_edge(CLK) then

4
rtl/w11a/tb/tb_pdp11core_stim.dat
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@@ -1,4 +1,4 @@
# $Id: tb_pdp11core_stim.dat 829 2016-12-26 18:56:17Z mueller $
# $Id: tb_pdp11core_stim.dat 831 2016-12-27 16:51:12Z mueller $
#
# Revision History:
# Date Rev Version Comment
@@ -331,7 +331,7 @@ bwm 8
001000 -- 1000 100000 base
001200 -- 1200 120000 base
001400 -- 1400 140000 base
177600 -- 176000 (map to I/O page)
177600 -- 177600 (map to I/O page)
#-----------------------------------------------------------------------------
C Setup code 1 [base 2100] (very basics: cont,start; 'simple' instructions)
#