Alan Cox [Thu, 28 Feb 2019 21:36:24 +0000 (21:36 +0000)]
kernel: kiss char * goodbye as much as possible, also fix pipe open
Also fix the pipe open semantics for named pipes (I hope).
Alan Cox [Thu, 28 Feb 2019 21:33:28 +0000 (21:33 +0000)]
v85: add floppy, ramdisc and rtc
Based on the emulations added to the emulator. This hopefully gives people some
more examples to work with when writing stuff.
Alan Cox [Thu, 28 Feb 2019 21:32:15 +0000 (21:32 +0000)]
trs80m1: remove debugging code
Alan Cox [Thu, 28 Feb 2019 21:31:55 +0000 (21:31 +0000)]
rc2014: clarify CTC card
Alan Cox [Thu, 28 Feb 2019 21:31:29 +0000 (21:31 +0000)]
amstradnc: typo fix
Alan Cox [Thu, 28 Feb 2019 21:30:47 +0000 (21:30 +0000)]
fdc765: fix off by one
Alan Cox [Sun, 24 Feb 2019 21:43:02 +0000 (21:43 +0000)]
yaz180: ppide changes
In theory this gets us a kernel that will work on a Yaz180.
Alan Cox [Sat, 23 Feb 2019 15:47:41 +0000 (15:47 +0000)]
v65c816:fix config
Alan Cox [Wed, 20 Feb 2019 23:05:38 +0000 (23:05 +0000)]
zxdiv48: Initial code for 48K ZX Spectrum with DivIDE plus or ZXCF
Queueing this up for weekend testing.
It seemed a shame that the classic squishy key machines were being left out
so there was only one thing left to do - fix it.
It's a curious combination of the 128K/DivIDE model and the single process
in memory model. The kernel is banked four ways in the low 16K using memory
from the DivIDE Plus or ZXCF card. The area between the screen and 0x8000 just
about fits enough data for a minimal system providing the disk buffers are
banked. From 0x800-0xFBFF is then used for the application space with FC00-FFFF
holding the stacks, udata and a 256 byte space we may yet need.
The rest of the 512/1024K of RAM on the interface is then used as swap.
Task switching is slow (two x 32K ldir) but that is no worse than the disk
load/save used by other single process in memory platforms.
The biggest problem is the limited amount of unbanked kernel RAM. With the
screen at 0x4000-0x5AFF we only have a shade over 8K for all our common,
our data, constants and bank switching stubs. To get it to fit we end up
limiting our user space to 31K (versus 31.5K on most other 32K switched bank
platforms).
Alan Cox [Wed, 20 Feb 2019 22:34:18 +0000 (22:34 +0000)]
visualize: allow visualisation of banked kernels
Alan Cox [Wed, 20 Feb 2019 22:33:56 +0000 (22:33 +0000)]
binmunge: support more banks, and fix hardcoded bank counts
Alan Cox [Wed, 20 Feb 2019 22:33:14 +0000 (22:33 +0000)]
z80: single process banked kernel
Alan Cox [Wed, 20 Feb 2019 22:32:59 +0000 (22:32 +0000)]
z80single: remove comment for work done
Alan Cox [Wed, 20 Feb 2019 22:32:09 +0000 (22:32 +0000)]
z80: add out16 for out's to a 16bit port, and in16 likewise
We need these for some of the systems that do I/O decoding on the cheap (like
the ZX spectrum). Not yet tested.
Alan Cox [Wed, 20 Feb 2019 22:30:48 +0000 (22:30 +0000)]
swap: allow offet 0 to be used for swap
Don't make it the default because some platforms use swap slot 0 for other things
Alan Cox [Wed, 20 Feb 2019 01:14:04 +0000 (01:14 +0000)]
kernel remove dead old z80 def file
Alan Cox [Wed, 20 Feb 2019 01:13:42 +0000 (01:13 +0000)]
v68: kill stale dead experimeting trees
Alan Cox [Wed, 20 Feb 2019 01:06:16 +0000 (01:06 +0000)]
spx302: Initial code sketch for the SPX302/MPU302 conversion
See https://www.retrobrewcomputers.org/doku.php?id=builderpages:plasmo:spx-mpu
for more information about this system.
This is just an initial set of buildable code. It needs a loader and debugging
before we can get further
Alan Cox [Wed, 20 Feb 2019 01:03:03 +0000 (01:03 +0000)]
make: fix make clean rules
Alan Cox [Wed, 20 Feb 2019 00:30:40 +0000 (00:30 +0000)]
v85: update for the latest v85 to allow reboot
Alan Cox [Wed, 20 Feb 2019 00:29:12 +0000 (00:29 +0000)]
z80/rabbit: The big rearrange of U_DATA to _udata offsets
The linker is good enough to work this out (except for the one z180.s case) so
move to letting the linker do the work. This eliminates a configuration item
for people to get wrong, and also will be needed to generate a relocatable
Fuzix kernel.
Alan Cox [Tue, 19 Feb 2019 14:46:13 +0000 (14:46 +0000)]
pentagon: fix I/O ports on sketch of loader code
It doesn't work yet at all, but since I noticed this in the first sketches I
wanted to fix it before I forget
Alan Cox [Tue, 19 Feb 2019 14:45:12 +0000 (14:45 +0000)]
configs: add direct I/O to various platforms that can use it just fine
Alan Cox [Tue, 19 Feb 2019 14:43:14 +0000 (14:43 +0000)]
amstradnc: use generic 16 banking code
Alan Cox [Tue, 19 Feb 2019 14:42:29 +0000 (14:42 +0000)]
z80: unified z80 4 x 16 bank tricks code
And apply it to rc2014 and zeta2
Alan Cox [Tue, 19 Feb 2019 14:35:14 +0000 (14:35 +0000)]
nc100: fix weird crash caused by _HOME segment
divulong was added by the compiler in _HOME. As we didn't list _HOME in crt0
it ended up being recycled
Alan Cox [Tue, 19 Feb 2019 00:23:24 +0000 (00:23 +0000)]
n8vem: fix missing newline
Alan Cox [Tue, 19 Feb 2019 00:22:58 +0000 (00:22 +0000)]
config: update so everyone has BOOTDEVICENAMES
Alan Cox [Tue, 19 Feb 2019 00:20:05 +0000 (00:20 +0000)]
filesys: not an optimization to look into
Alan Cox [Mon, 18 Feb 2019 00:06:06 +0000 (00:06 +0000)]
8080: small uzero optimization
Alan Cox [Mon, 18 Feb 2019 00:04:20 +0000 (00:04 +0000)]
v85: switch to vectored interrupts and use some 8085 optimizations
Alan Cox [Sun, 17 Feb 2019 23:56:11 +0000 (23:56 +0000)]
8080: add framework for 8085 vectored interrupts and 8214 interrupts
Alan Cox [Sat, 16 Feb 2019 22:12:09 +0000 (22:12 +0000)]
v85: intial merge of the port
Alan Cox [Sat, 16 Feb 2019 22:07:39 +0000 (22:07 +0000)]
start: move memory printing
Some platforms benefit from sizing memory later (or even stealing memory during
boot dynamically) so move the reporting.
Alan Cox [Sat, 16 Feb 2019 19:47:25 +0000 (19:47 +0000)]
tc2068: remove work done from README
Alan Cox [Sat, 16 Feb 2019 12:40:54 +0000 (12:40 +0000)]
README.md: update
Alan Cox [Sat, 16 Feb 2019 12:40:15 +0000 (12:40 +0000)]
v8080: remove rst.s and update documentation
The current rst.s is now a match for the compiler one and we need no differences
so just use the provided one.
Alan Cox [Sat, 16 Feb 2019 11:47:16 +0000 (11:47 +0000)]
cpuinfo: add 8080 support
Alan Cox [Sat, 16 Feb 2019 11:46:37 +0000 (11:46 +0000)]
8080: fix a bug in the cpu detection code
Still needs more checking
Alan Cox [Sat, 16 Feb 2019 02:46:02 +0000 (02:46 +0000)]
v8080: align with upstream rsts
Alan Cox [Sat, 16 Feb 2019 02:30:54 +0000 (02:30 +0000)]
sh: add string.h for strsignal()
Alan Cox [Sat, 16 Feb 2019 00:12:27 +0000 (00:12 +0000)]
df: update to match changes in includes and speed up
Whilst we are it we can treat mtab as official so we don't do lots of pointless
lookups for the generic case of 'df'.
Alan Cox [Fri, 15 Feb 2019 23:04:19 +0000 (23:04 +0000)]
v8080: update README
Alan Cox [Fri, 15 Feb 2019 23:03:44 +0000 (23:03 +0000)]
rabbit: htons/htonl
Alan Cox [Fri, 15 Feb 2019 23:02:17 +0000 (23:02 +0000)]
8080: fix low level signal delivery logic
Alan Cox [Fri, 15 Feb 2019 23:01:52 +0000 (23:01 +0000)]
8080: commit the crt0 files I forgot
Alan Cox [Fri, 15 Feb 2019 21:57:41 +0000 (21:57 +0000)]
8080: turn on interrupt support and pre-emption
Fix one small bug in the process
Alan Cox [Fri, 15 Feb 2019 21:42:17 +0000 (21:42 +0000)]
v8080: update README
Alan Cox [Fri, 15 Feb 2019 21:41:21 +0000 (21:41 +0000)]
v8080: use the 8080 checker we added
We don't want long signed divide/multiply or floats sneaking into the kernel
Alan Cox [Fri, 15 Feb 2019 21:40:59 +0000 (21:40 +0000)]
check8080: warn if we accidentally suck in stuff we don't save when switching
Alan Cox [Fri, 15 Feb 2019 21:40:28 +0000 (21:40 +0000)]
8080: fix strerror/perror - 8080 is little endian
Alan Cox [Fri, 15 Feb 2019 21:40:13 +0000 (21:40 +0000)]
sysconf: pagesize could be 64K
Alan Cox [Fri, 15 Feb 2019 21:39:45 +0000 (21:39 +0000)]
libc: correct for small change to mount struct
We need to revisit the syscall as well.
Alan Cox [Fri, 15 Feb 2019 21:39:11 +0000 (21:39 +0000)]
tail: use static buffer to keep cc65 happy
Alan Cox [Fri, 15 Feb 2019 21:38:53 +0000 (21:38 +0000)]
pagesize: use long types
Alan Cox [Fri, 15 Feb 2019 21:38:36 +0000 (21:38 +0000)]
man: keep stack usage down to keep cc65 happy
Alan Cox [Fri, 15 Feb 2019 21:37:47 +0000 (21:37 +0000)]
sh: msg array is surplus now the shell uses the libc table
Alan Cox [Fri, 15 Feb 2019 13:08:48 +0000 (13:08 +0000)]
sh: use proper signal names from the library
Alan Cox [Fri, 15 Feb 2019 01:04:57 +0000 (01:04 +0000)]
8080: fix uget return
This fixes the lseek bug and possibly others too
Alan Cox [Fri, 15 Feb 2019 00:32:56 +0000 (00:32 +0000)]
v8080: update for the rst changes
- Save BC
- Only install the vectors for kernel
- Use the rst routines from todays kernel
Alan Cox [Fri, 15 Feb 2019 00:32:42 +0000 (00:32 +0000)]
v8080: update README
Alan Cox [Fri, 15 Feb 2019 00:32:17 +0000 (00:32 +0000)]
8080: sketch out the irq saves needed
Alan Cox [Fri, 15 Feb 2019 00:32:03 +0000 (00:32 +0000)]
8080fixedbank: note some areas to look at for switching
Alan Cox [Tue, 12 Feb 2019 21:02:11 +0000 (21:02 +0000)]
8080fixedbank: fix switching bugs
Alan Cox [Mon, 11 Feb 2019 23:32:07 +0000 (23:32 +0000)]
library: add some build rules
Alan Cox [Mon, 11 Feb 2019 23:31:10 +0000 (23:31 +0000)]
8080: 'fast' fork copier: 24 clocks/byte
Don't read this code after a large lunch
Alan Cox [Mon, 11 Feb 2019 23:30:51 +0000 (23:30 +0000)]
v8080: update README
Alan Cox [Mon, 11 Feb 2019 23:30:27 +0000 (23:30 +0000)]
8080: cpu type detection
Alan Cox [Mon, 11 Feb 2019 23:30:13 +0000 (23:30 +0000)]
8080fixedbank: remove some debug
Alan Cox [Mon, 11 Feb 2019 18:53:07 +0000 (18:53 +0000)]
tools: Update tools and add library tool so we can do FZL1 files
Alan Cox [Mon, 11 Feb 2019 01:50:59 +0000 (01:50 +0000)]
ack2kernel: print the right numbers
Alan Cox [Mon, 11 Feb 2019 01:50:39 +0000 (01:50 +0000)]
8080: further fixes for the banking code
Alan Cox [Mon, 11 Feb 2019 01:49:40 +0000 (01:49 +0000)]
library: build the new tools
Alan Cox [Mon, 11 Feb 2019 01:49:28 +0000 (01:49 +0000)]
8080: fix syscalls and move to new abi
Alan Cox [Mon, 11 Feb 2019 01:48:49 +0000 (01:48 +0000)]
ack2fuzix: tool for building user binaries
Alan Cox [Mon, 11 Feb 2019 01:48:26 +0000 (01:48 +0000)]
setjmp: correct prototype for 8080
Alan Cox [Mon, 11 Feb 2019 01:48:14 +0000 (01:48 +0000)]
8080: more usermem fixes
Alan Cox [Mon, 11 Feb 2019 01:47:51 +0000 (01:47 +0000)]
8080: switch to new ABI
Alan Cox [Mon, 11 Feb 2019 01:47:26 +0000 (01:47 +0000)]
v8080: remove some debug and add a dependency
Alan Cox [Sun, 10 Feb 2019 16:02:28 +0000 (16:02 +0000)]
v8080: fix up the fork copier
Leave some debug in for now.
With this in place we get a shell prompt - then task switch and die
fork() is really slow. For 8080 we definitely need some smarter logic here
to only copy 0->brk and sp->top and clean up as needed in brk().
Alan Cox [Sun, 10 Feb 2019 16:01:50 +0000 (16:01 +0000)]
8080: fix up bugs in the fork and copiers
Task switching is still busted somewhere
Alan Cox [Sun, 10 Feb 2019 15:39:20 +0000 (15:39 +0000)]
v8080: core changes to get to the point we can start init properly
Alan Cox [Sun, 10 Feb 2019 15:39:00 +0000 (15:39 +0000)]
start: it's 2019
Alan Cox [Sun, 10 Feb 2019 02:04:24 +0000 (02:04 +0000)]
8080: more work on usermem
Alan Cox [Sun, 10 Feb 2019 01:44:03 +0000 (01:44 +0000)]
v8080: install interrupt handler
Alan Cox [Sun, 10 Feb 2019 01:37:58 +0000 (01:37 +0000)]
v8080: try and get bss end
Doesn't work ??
Alan Cox [Sun, 10 Feb 2019 01:37:37 +0000 (01:37 +0000)]
v8080: sort out where we set stuff up
Alan Cox [Sun, 10 Feb 2019 01:36:04 +0000 (01:36 +0000)]
v8080: simulator tty doesn't have output blocking
Alan Cox [Sun, 10 Feb 2019 01:34:57 +0000 (01:34 +0000)]
8080: Fix and workarounds to get crt0 up and working
Alan Cox [Sun, 10 Feb 2019 01:34:40 +0000 (01:34 +0000)]
v8080: Fix bootblock and building of it
Alan Cox [Sat, 9 Feb 2019 23:17:15 +0000 (23:17 +0000)]
v8080: add the compiler helper restarts
Alan Cox [Sat, 9 Feb 2019 21:57:11 +0000 (21:57 +0000)]
8080: update README
Alan Cox [Sat, 9 Feb 2019 21:55:02 +0000 (21:55 +0000)]
v8080: Various pieces of work to bring us closer to testing
We now have a disk driver and a serial driver.
Alan Cox [Sat, 9 Feb 2019 21:53:45 +0000 (21:53 +0000)]
8080: fill out the rest of usermem
Alan Cox [Sat, 9 Feb 2019 21:52:32 +0000 (21:52 +0000)]
8080: kernel.def
The main thing here is the section stuff. The ACK toolchain just numbers sections
and if you name them differently or in a different order in a file it just doesn't
care. Nasty.... so define our order here at the start of each asm file hopefully
Alan Cox [Sat, 9 Feb 2019 21:51:57 +0000 (21:51 +0000)]
8080: ABI fixes (DE return not HL)
Alan Cox [Sat, 9 Feb 2019 21:51:19 +0000 (21:51 +0000)]
8080fixedbank: fast(er) copier
Alan Cox [Sat, 9 Feb 2019 21:50:47 +0000 (21:50 +0000)]
8080: preserve BC on switches as required by the compiler ABI
Alan Cox [Sat, 9 Feb 2019 21:50:32 +0000 (21:50 +0000)]
8080: build the new tools
Alan Cox [Sat, 9 Feb 2019 21:49:53 +0000 (21:49 +0000)]
tools: ack 8080 helpers to write a usable map file and kernel image