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V0.77 docu update [skip ci]

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wfjm
2019-04-28 17:44:02 +02:00
parent 5a5e46f409
commit 0bdd9f10dd
2 changed files with 14 additions and 11 deletions
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23
doc/README_known_issues.md
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@@ -138,16 +138,6 @@ systems never setup DMA transfers to/from non-existing memory. However, some
highly space optimized crash dump routines use this to detect end-of-memory
and might endless loop. Also maindec's might test this border case and fail.
### V0.50-10 {[issue #20](https://github.com/wfjm/w11/issues/20)} -- DL11: output chars lost when device polling used
Part of the console output can be lost when `xxdp` test `eqkce1` is
run on FPGA, also some kernel messages during the 2.11bsd boot sequence.
In both cases very simple polling output routines are used. Most likely
cause is that device ready polls timeout before the rlink interface can
serve the output request.
Will be overcome by a DL11 controller with more buffering and improved
interrupt rate control.
### V0.76-3 {[issue #18](https://github.com/wfjm/w11/issues/18)} -- w11 clock rate limited by CACHE-to-CACHE false path
So far all Series-7 w11a systems ran with 80 MHz clock. The sys_w11_arty
design (with DDR memory support via MIG) also achieves timing closure under
@@ -260,6 +250,19 @@ the backend produces proper command lists and the USB channel is usually error
free}_
## Resolved Issues
### V0.50-10 {[issue #20](https://github.com/wfjm/w11/issues/20)} -- DL11: output chars lost when device polling used
#### Original Issue
Part of the console output can be lost when `xxdp` test `eqkce1` is
run on FPGA, also some kernel messages during the 2.11bsd boot sequence.
In both cases very simple polling output routines are used. Most likely
cause is that device ready polls timeout before the rlink interface can
serve the output request.
#### Fix
Is overcome with buffered DL11 controller with much higher throughput and
improved interrupt rate control.
Fixed with commit [1c9dbeb](https://github.com/wfjm/w11/commit/1c9dbeb).
### V0.77-1 {[issue #19](https://github.com/wfjm/w11/issues/19)} -- tcl getters accessing a const reference crash with a SIGSEGV
#### Original Issue
tcl commands like

2
rtl/w11a/tb/tb_rlink_tba_pdp11core_ibdr.dat
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@@ -1,4 +1,4 @@
# $Id: tb_rlink_tba_pdp11core_ibdr.dat 1126 2019-04-06 17:37:40Z mueller $
# $Id: tb_rlink_tba_pdp11core_ibdr.dat 1141 2019-04-28 15:42:06Z mueller $
#
# Revision History:
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