General Category > LisaList2
Monitor format for ProFiles
stepleton:
I'm now giving the "universal" image a go. Things are promising at the start: the Lisa 1 announces as it boots that it's loading TWGDRVR7.OBJ while the 2/10 says it's loading SNYDRVR7.OBJ. Now to see if I can mount some disks...
On the Lisa 1: yes, we can read Twiggies!
On the Lisa 2: yes, we can read 3.5" disks!
At least well enough to do directory listings, which may not be so demanding. I tried to run Smalltalk off a Universal twiggy and it did not work, but we expect this from Monitor 12 (Smalltalk prefers 11). (Smalltalk is an excellent way to exercise a read from an entire Twiggy as that's how large the VM image is.)
(Does anyone know how to get the Monitor on a Lisa 2 to eject a floppy disk?)
pablo_marx, are there any real hardware experiments that I've forgotten to run? Sorry it took me so long! Excellent work.
stepleton:
Finally, I can confirm that the monitor assembly that failed for me on the floppy disk appears to work just fine when carried out on the ProFile. Not only that, it is much, much faster, taking perhaps five or ten minutes (cup-of-tea time) instead of the hours I found when doing the same on the floppy.
Thanks once again for this amazing progress with the Monitor!
TorZidan:
Does anyone know how to mimic the SmallTalk mouse buttons in LisaEm running on e.g Linux PC?
Years ago,
stepleton@ figured it out IRL (in real Lisa):
https://lisalist2.com/index.php?topic=195.0
"Once loaded, it is helpful to know that this Smalltalk was designed for computers with three-button mice. The buttons were identified by colour. The "red button" is your ordinary Lisa mouse button. The "yellow button" is the Apple key and the "blue button" is either option key."
I tried the "Windows", "Alt" and "Ctrl" keys on my keyboard, but no luck.
TorZidan:
--- Quote from: pablo_marx on April 07, 2025, 02:43:05 am ---I've long been confused why in lisaem, installing MacWorks XL to the Profile does not result in a bootable setup - you still have to use a floppy. This is even noted in LisaEm_Users_Guide_1.2.5.pdf – attempting to boot from the Profile after installation results in an error 75 (from the ROM).
The two writes to the VIA are getting duplicated on lisaem's profile side of things, resulting it in never seeing the block number where it expects.
--- End quote ---
After this excellent analysis of the bug, I took interest in it and fixed it in LisaEm:
https://github.com/arcanebyte/lisaem/pull/31
It has been merged into the master branch.
Some more regression testing is needed to confirm that I haven't broken anything...
It seems that Ray had written some code to ignore these duplicate writes, but the code was in the wrong place, and incomplete...
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