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Description: The SDCC version the same problems with integer overflow during
compilation as described for pjrc-8051. At typical cause is code like
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usleep(500*1000) which exceeds the range of a 16-bit integer.
Status: See pjrc-8051. These have probably been fixed but have not yet
been verified on these platforms.
Description: The simulated Z80 serial console (configs/z80sim/src/z80_serial.c +
driver/serial.c) does not work. This is because there are
no interrupts in the simulation so there is never any serial
traffic.
Status: Open
Priority: Low -- the simulated console is not critical path and the designs
to solve the problem are complex.
Description: ZDS-II Librarian complains that the source for the .obj file
is not in the library.
Status: Open
Priority: Low, thought to be cosmetic. I think this is a consequence of
replacing vs. inserting the library.
Description: The ZDS-II compiler (version 4.10.1) fails with an internal error
while compiler mm/mm_initialize. This has been reported as
incident 81509.
I have found the following workaround that I use to build for the
time being:
--- mm/mm_initialize.c.SAVE 2008-02-13 08:06:46.833857700 -0600
+++ mm/mm_initialize.c 2008-02-13 08:07:26.367608900 -0600
+#if 0 /* DO NOT CHECK IN */
CHECK_ALLOCNODE_SIZE;
CHECK_FREENODE_SIZE;
+#endif
Description: Add support for prioritized ez8 interrupts. Currently logic supports
only nominal interrupt priority.
Status: Open
Priority: Low
Description: The z8Encore! port has only been verified on the ZDS-II instruction
set simulator.
Status: Open
Priority: Medium
Description: Upgrade to the ZDS-II Z8Encore! 4.11.0 toolchain
Status: Open
Priority: Low
Description: The XTRS target (configs/xtrs) has a clean problem. The clean
rule removes .asm files. This works because there are no .asm
files except in sub-directories that are provided from 'make clean' --
except for XTRS: It has a .asm file in its src/ directory that
gets removed everytime clean is performd.
Status: Open
Priority: High if you happen to be working with XTRS.
Description: A "generic" SPI and I2C drivers have been coded for the eZ80Acclaim!
However, these remains untested since I have no SPI or I2C devices for
the board (yet).
Status: Open
Priority: Med
Description: SPI methods are not thread safe. Needs a semaphore to protect from re-entrancy.
Status: Open
Priority: Medium -- Will be very high if you do SPI access from multiple threads.
Description: A "generic" I2C driver has been coded for the eZ8Encore!
However, this remains untested since I have no I2C devices for
the board (yet).
Status: Open
Priority: Med
Description: ZDS-II Librarian complains that the source for the .obj file
is not in the library.
Status: Open
Priority: Low, thought to be cosmetic. I think this is a consequence of
replacing vs. inserting the library.
Description: When the interrupt-driven serial driver is used, the system
hangs. This is because of TX ready (TRDE) interrupts that
get lost while interrupts are disabled. The existing
serial driver appears to be limited to hardware with a
latching, level-sensitive TX ready interrupt.
Status: Open
Priority: Medium. A polled, write-only serial driver is used in the
interim for system testing.
Description: The system delays do not appear to be correct with the
apps/examples/ostest/timedmqueue.c test.
Description: At present, the z16f port does not run properly when CONFIG_DEBUG
is disabled: The obvious symptom is that there is no printf()
output. I have isolated with problem to errors in optimization.
With -reduceopt on the command line, I can get the printf output.
However, there are still errors in the compiled code -- specifically
in sched/timer_create.c.
I have submitted a bug report to ZiLOG for this (support incident
81400). You can see the status of the bug report (and lots more
technical detail) here:
http://support.zilog.com/support/incident/incident_support.asp?iIncidentId=81400&iSiteId=1&chLanguageCode=ENG
Summary of ZiLOG analysis: "This is a ZNEO compiler problem. ... [a] workaround
is to replace:
if ( !timerid || (clockid != 0) )
By:
if ((clockid != 0) || !timerid)"
Description: The pascal add-on does not work with the z16f (that is
configuration z16f2800100zcog/pashello). This appears to be
another ZDS-II error: when executing the instruction
SYSIO 0, WRITESTR a large case statement is executed. This
involves a call into the ZiLOG runtime library to __uwcase().
__uwcase is passed a pointer to a structure containing jump
information. The cause of the failure appears to be that
the referenced switch data is bad.
This is submited as ZiLOG support incident 81459.
Summary of ZiLOG analysis: "This is a ZNEO run time library problem.
One workaround is to replace the line 58 in uwcase.asm
From:
ADD R9,#4 ; Skip handler
To:
ADD R9,#2 ; Skip handler
And add uwcase.asm to the project.
If the customer does not want to modify uwcase.asm then the other
workaround is to add a dummy case and make it same as default:
case 0x8000:
default:
This will make sure that uwcase is not called but ulcase is called."
Status: Open. Due to licensing issues, I cannot include the modified
uwcase in the NuttX code base.
Description: Add support to maintain SPOV in context switching. This
improvement will provide protection against stack overflow
and make a safer system solution.
Status: Open
Priority: Low
Description: Add support for prioritized interrupts. Currently logic supports
only nominal interrupt priority.
Status: Open
Priority: Low
Description: The file drivers/mmcsd/mmcsd_sdio.c generates an internal compiler
error like:
mmcsd\mmcsd_sdio.c
Internal Error(0503) On line 2504 of "MMCSD\MMCSD_SDIO.C"
File <c3>, Args(562,46)
Status: Open. Recommended workaround: remove mmcsd_sdio.c from
drivers/mmcsd/Make.defs. There is no SDIO support for the Z16 anyway
Priority: Low
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o mc68hc1x (arch/hc)
^^^^^^^^^^^^^^^^^^
Description: There is no script for building in banked mode (more correctly, there
is a script, but logic inside the script has not yet been implemented).
It would be necessary to implement banked mode to able to access more
the 48Kb of FLASH.
Status: Open.
Priority: Medium/Low
o Network Utilities (apps/netutils/)
Description: One critical part of netutils/ apps is untested: The uIP
resolver in netutils/resolv. The webclient code has been
tested on host using gethosbyname(), but still depends on the
untested resolve logic.
Status: Open
Priority: Medium, Important but not core NuttX functionality
Description: Port PPP support from http://contiki.cvs.sourceforge.net/contiki/contiki-2.x/backyard/core/net/ppp/
Status: Open
Priority: Low
Description: Not all THTTPD features/options have been verified. In particular, there is no
test case of a CGI program receiving POST input. Only the configuration of
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Status: Open
Priority: Medium
Description: The first GET received by THTTPD is not responded to. Refreshing the page
from the browser solves the problem and THTTPD works fine after thatg. I
believe that this is the duplicate of another bug: "Outgoing [uIP] packets are dropped
and overwritten by ARP packets if the destination IP has not been mapped to a MAC."
Status: Open
Priority: Medium
Description: If the network is enabled, but THTTPD is not configured, it spews out lots
of pointless warnings. This is kind of annoying and unprofessional; needs to
be fixed someday.
Status: Open. An annoyance, but not a real problem.
Priority: Low
o NuttShell (NSH) (apps/nshlib)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Description: When the telnetd front end is received, each TCP packet
received causes a prompt (nsh >) to be presented. The
prompt should only be presented when the user enters a
carriage return.
Status: Open
Priority: Low
Description: The wget command has been incorporated into NSH, however
it is still untested as of this writing (only because I
have not had the correct network setup for the testing
yet). Since wget depends on the also untest uIP resolv/
logic, it is like non-functional.
Status: Open
Priority: Med-High
Descripton: The ifconfig command will not behave correctly if an interface
is provided and there are multiple interfaces. It should only
show status for the single interface on the command line; it will
still show status for all interfaces.
Status: Open
Priority: Low (multiple network interfaces not fully supported yet anyway).
Description: Add support to NSH to run NXFLAT programs from a ROMFS file system
Status: Open
Priority: Low (enhancement)
Description: Add an ARP command so that we can see the contents of the ARP table.
Status: Open
Priority: Low (enhancement)
o Other Applications & Tests (apps/examples/)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Description: The redirection test (part of examples/pipe) terminates
incorrectly on the Cywgin-based simulation platform (but works
fine on the Linux-based simulation platform).
Status: Open
Priority: Low
Description: examples/wget is untested on the target (it has been tested
on the host, but not in the target using the uIP resolv logic).
Status: Open
Priority: Med
Description: examples/sendmail is untested on the target (it has been tested
on the host, but not on the target.
Status: Open
Priority: Med