Previous Thread
Next Thread
Print Thread
Page 483 of 536 1 2 481 482 483 484 485 535 536
Joined: Jan 2012
Posts: 856
Likes: 2
C
Senior Member
Online Content
Senior Member
C
Joined: Jan 2012
Posts: 856
Likes: 2
From the roms posted at eevblog.

It has two 640 char lcd controllers for each half of the panel. The font rom and 8276 crtc are for the external crt support.

Last edited by crazyc; 12/02/16 03:23 PM.
Joined: Mar 2001
Posts: 16,716
Likes: 11
R
Very Senior Member
Offline
Very Senior Member
R
Joined: Mar 2001
Posts: 16,716
Likes: 11
Awesome smile

Joined: May 2009
Posts: 1,923
Likes: 3
J
Very Senior Member
Offline
Very Senior Member
J
Joined: May 2009
Posts: 1,923
Likes: 3
Finally fixed the last(?) bug in the Hazeltine 1500 netlist code. It wasn't actually a bug in the netlist code that was hanging me up, I had the Am2847 Quad 80-bit Shift Register implemented with 160 bits instead. No wonder it looked like the lines were taking twice as long to clock out.



More importantly, this means the netlist system is now capable of accessing ROMs loaded by MAME, and between that and the devices I've added, there are only 10 or 11 (depending on how you count) logic ICs standing between now and being able to netlist Stunt Cycle. smile

Joined: Oct 2006
Posts: 997
Likes: 4
S
Senior Member
Offline
Senior Member
S
Joined: Oct 2006
Posts: 997
Likes: 4
Originally Posted By Just Desserts
Finally fixed the last(?) bug in the Hazeltine 1500 netlist code. It wasn't actually a bug in the netlist code that was hanging me up, I had the Am2847 Quad 80-bit Shift Register implemented with 160 bits instead. No wonder it looked like the lines were taking twice as long to clock out.

More importantly, this means the netlist system is now capable of accessing ROMs loaded by MAME, and between that and the devices I've added, there are only 10 or 11 (depending on how you count) logic ICs standing between now and being able to netlist Stunt Cycle. smile


Awesome JD! laugh

Joined: Aug 2009
Posts: 1,140
Very Senior Member
Offline
Very Senior Member
Joined: Aug 2009
Posts: 1,140
Some Acorn Archimedes snaps, after working floppy emulation:











Some stuff doesn't boot at all, and timings are a bit screwy. I also suspect palette raster is used for the last snap (Twinworld)
Other than that is a great achievement wink

Joined: Mar 2008
Posts: 201
R
Senior Member
Offline
Senior Member
R
Joined: Mar 2008
Posts: 201
So cool!

Great to see progress on Acorn machines!

Joined: Jul 2007
Posts: 4,625
A
Anna Wu Offline OP
Very Senior Member
OP Offline
Very Senior Member
A
Joined: Jul 2007
Posts: 4,625
Originally Posted By Kale
Some Acorn Archimedes snaps, after working floppy emulation


Very nice, Kale. smile

Joined: May 2012
Posts: 541
S
Senior Member
Offline
Senior Member
S
Joined: May 2012
Posts: 541
ibm6580.cpp (IBM Displaywriter) WIP. Thanks to nigwil@vcfed for redumping the ROM.



Character generator ROM is not dumped (and it's in EBCDIC), I've used a generic PC font + translation table. Actual font looks like this:


Joined: Jan 2011
Posts: 214
Likes: 1
Senior Member
Offline
Senior Member
Joined: Jan 2011
Posts: 214
Likes: 1
Originally Posted By shattered
ibm6580.cpp (IBM Displaywriter) WIP. Thanks to nigwil@vcfed for redumping the ROM.


Character generator ROM is not dumped (and it's in EBCDIC), I've used a generic PC font + translation table. Actual font looks like this:




I'll see what I can do wrt dumping all the roms and the microcontroller. Not having the floppy one is probably a showstopper, I'm guessing the protocol isn't obvious. Are you going to add the blinky diagnostic leds? Can you push what you have so far so I can compare the dump with what I end up doing?

Last edited by Al Kossow; 12/30/16 09:04 PM.
Joined: May 2012
Posts: 541
S
Senior Member
Offline
Senior Member
S
Joined: May 2012
Posts: 541
Yeah -- they are connected to 8255 port B and atm I'm simply printing text.

WIP code is at https://github.com/shattered/mame/tree/_fee702a

Page 483 of 536 1 2 481 482 483 484 485 535 536

Link Copied to Clipboard
Who's Online Now
4 members (AJR, MrBogi, Pernod, 1 invisible), 35 guests, and 2 robots.
Key: Admin, Global Mod, Mod
ShoutChat
Comment Guidelines: Do post respectful and insightful comments. Don't flame, hate, spam.
Forum Statistics
Forums9
Topics8,921
Posts117,205
Members4,989
Most Online890
Jan 17th, 2020
Forum Host
These forums are hosted by www.retrogamesformac.com
Forum hosted by www.retrogamesformac.com