On Thu, 31 May 2018 12:22:43 -0700
"John R. Hogerhuis" wrote:
> Here is the classic 8085 relative jump for those interested.
>
> It requires some code at a fixed location :-)
Classic cleverness!
Willard
--
Willard Goosey goo...@sdc.org
Socorro, New Mexico, USA
I search my heart and find
On Thu, 31 May 2018 14:15:19 -0500
John Gardner wrote:
> Your code can figure out it's execution address with something like:
>
> call @Boo
> Boo pop B
> pop A
>
> Boo's address is now in register pair A,B...
>
Umm, on a point of order...
I see what you're
On Wed, 30 May 2018 14:48:11 -0400
Stephen Adolph wrote:
> I often want to embed ML into basic programs. There are 2 ways that
> I use 1) make a string of binary and assign it to a basic string
> variable. (use VARPTR)
> 2) include data statements that contain the ML binary, with some
>
I've been reading through the technical manual for the 8201. I noticed
that on page 1-2 it lists the baud rate of the cassette port at 600 or
1200 and that it is software selectable. But I don't see any reference
as to where this is set. Does anyone know how to bump it from the
default of 600 to
Funny, I had no idea the iPhone camera feature would activate QRCode links!
In the past you had to rely on a barcode scanner app being installed and
launched.
So if you have the QRCode below on a card or sticker or something, you just
Open Camera
Point it at the QRCode
Your iPhone or iPad will
On Thu, May 31, 2018 at 2:02 PM, Ken Pettit wrote:
> On 5/31/18 1:48 PM, John R. Hogerhuis wrote:
>
>>
>> -clip- Who spends time writing code whose only purpose is to prevent
>> software from working?
>>
>
> Hmm, let's see ... Cadence, Synopsys, Autodesk, Oracle, Mathworks, ...
>
> Sometimes
On 5/31/18 1:48 PM, John R. Hogerhuis wrote:
-clip- Who spends time writing code whose only purpose is to prevent
software from working?
Hmm, let's see ... Cadence, Synopsys, Autodesk, Oracle, Mathworks, ...
Sometimes they call it a License Manager. ;)
Ken
On Thu, May 31, 2018 at 1:41 PM, Eric Nelson wrote:
> I did try and toggle the control flow using the STAT line to no avail, but
> I did not tinker with the settings on the Wifi232. I will give that a shot
> and report back. Thanks for the help!
>
>
DTR/DSR is enforced here and there by the ROM
I did try and toggle the control flow using the STAT line to no avail, but
I did not tinker with the settings on the Wifi232. I will give that a shot
and report back. Thanks for the help!
>it has a solder jumper to assert dsr/dtr
>On Thu, May 31, 2018 at 10:18 AM, John R. Hogerhuis
wrote:
>
>
Oh,
And speaking of hidey holes, there is a 52-byte hidey hole that exists
while BASIC is running that I don't believe anyone has ever realized
exists or has used before. On the M100 this address starts at F6EBH.
It is a table of 26 2-byte addresses which is used only in TEXT mode.
TEXT
Yeah, that's just 4 bytes of code. That could go in a hidey hole
(Suzuki, Hayashi, etc.).
Ken
On 5/31/18 12:45 PM, John Gardner wrote:
...Reljmp.pdf...
Nice. Thanks.
On 5/31/18, John Gardner wrote:
Hi John -
I'm thinking about Ken's idea of having code embedded in BASIC
jumping to
Self-locating code.
Ron Wiesen did some research a long time ago to figure out code in the ROM
that could tell you where you are calling from.
This is a critical part of code that can efficiently relocate itself to
run-in-place or at a specific location.
-- John.
-- Forwarded message
...Reljmp.pdf...
Nice. Thanks.
On 5/31/18, John Gardner wrote:
> Hi John -
>
> I'm thinking about Ken's idea of having code embedded in BASIC
>
> jumping to code embedded in a DO file - Sounds workable, even
>
> reasonable with a big routine, or a number of smaller routines.
>
> On 5/31/18,
Hi John -
I'm thinking about Ken's idea of having code embedded in BASIC
jumping to code embedded in a DO file - Sounds workable, even
reasonable with a big routine, or a number of smaller routines.
On 5/31/18, John R. Hogerhuis wrote:
> On Thu, May 31, 2018 at 12:15 PM, John Gardner
Here is the classic 8085 relative jump for those interested.
It requires some code at a fixed location :-)
RelJMP.pdf
Description: Adobe PDF document
On Thu, May 31, 2018 at 12:15 PM, John Gardner wrote:
> Your code can figure out it's execution address with something like:
>
> call @Boo
> Boo pop B
> pop A
>
> Boo's address is now in register pair A,B...
>
But you kind of already know since that code would
Your code can figure out it's execution address with something like:
call @Boo
Boo pop B
pop A
Boo's address is now in register pair A,B...
...
On Thu, May 31, 2018 at 11:51 AM, Stephen Adolph
wrote:
> Ken,
> so you are suggesting the .BA file calls into the .DO file? interesting.
>
> When I embed programs as strings, I write the program to avoid codes <32
> d.
> ex.
> mvi a,00
> is bad
> xra a
> is good.
>
>
Maybe the best of both
Hey Steve,
Yes, then you aren't as restricted on the opcodes plus you don't need
any encoding. You just need to ensure 1Ah doesn't appear anywhere. I
suppose if your ML code snippets don't need to perform any jumps to
address that require a byte <32, it works out. Also, I guess if you need
Ken,
so you are suggesting the .BA file calls into the .DO file? interesting.
When I embed programs as strings, I write the program to avoid codes <32
d.
ex.
mvi a,00
is bad
xra a
is good.
On Thu, May 31, 2018 at 2:34 PM, Ken Pettit wrote:
> Hey guys,
>
> Looking at this a bit, it seems
The relative branch technique I’ve seen requires a few bytes of code at a
fixed location.
— John.
Hey guys,
Looking at this a bit, it seems because of the restrictions imposed by
BASIC with regard to binary values less than 32 decimal, the only real
viable way to do execute in-place ML code would be to imbed it in a .DO
file. Then the only restriction is that you can't have 26 decimal
it has a solder jumper to assert dsr/dtr
On Thu, May 31, 2018 at 10:18 AM, John R. Hogerhuis
wrote:
>
> On Thu, May 31, 2018 at 10:10 AM Kurt McCullum wrote:
>
>> My 200 was picky about the DSR/DTR lines. I seem to recall that without a
>> loopback of those it wasn't happy.
>>
>>
> If the
On Thu, May 31, 2018 at 10:10 AM Kurt McCullum wrote:
> My 200 was picky about the DSR/DTR lines. I seem to recall that without a
> loopback of those it wasn't happy.
>
>
If the wifi232 is not asserting the t200’s DSR it ought to be! Maybe it’s
configurable.
— John.
My 200 was picky about the DSR/DTR lines. I seem to recall that without
a loopback of those it wasn't happy.
On Thu, May 31, 2018, at 7:50 AM, Gregory McGill wrote:
> I had this problem with a wimodem sending xon/xoff to my term program
> on a commodore and I ended up having to disable xon/off in
Hi Steve -
My original scheme (for TI-74) was to make the 1st pgm line
the DATA statement, in the form: 100 DATA ### ... ###
The "#" character are simply placeholders, up to 80 chars,
the max length of a DATA statement in TI-74 BASIC.
A TI-74 "main" pgm always starts at HIRAM;
I had this problem with a wimodem sending xon/xoff to my term program on a
commodore and I ended up having to disable xon/off in the terminal to get
it to stop locking the terminal up
On Wed, May 30, 2018 at 10:13 PM, John R. Hogerhuis
wrote:
>
> Instead of connecting to Wifi232 can you try
Hi Steve,
Search through BASIC lines? Nah, don't do that! Put a dummy DATA
statement and then your ML code:
10 DATA "a", "encoded ML"
Then do a READ D$. The BASIC ROM will perform the search and update
address FBB8H (on M100/T102) with the address where READ will start it's
search next.
here is an example - RAMTST - 64704 to 64936, so 232 bytes
this was the intel hex
:18FCC000CD3142F33E01D3E02E0926FECD8EFD2136802E0926BE62
:18FCD800CD8EFD2136402E0926FECD8EFD217E32A8FDAFD37A
:18FCF000E0FB3E0232A7FD3AA8FD4F3AA7FDB9C83C3C32A7FD2101010D
John I think a scheme like that could work, however you'd need to eliminate
all codes under 32decimal. To run in place, you lose the ability to
encode/decode the problematic characters.
finding the DATA statements in RAM can be done but it is a bit of work. I
think you'd have to start from the
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