exidysorcerer.net

Now also ported to SparkFun Pro Micro 5V 16 MHz, attached to SparkFun Level Shifting microSD board.

https://www.sparkfun.com/pro-micro-5v-16mhz.html

https://www.sparkfun.com/sparkfun-level ... akout.html

Ported!

Got spoiled by the Teensy's vast resources. Had to rewrite a lot to fit within the Micro's 2.5K RAM.

Block diagram:

Am porting this now to the 5V Arduino Micro. The FrequencyTimer2 lib doesn't support that board so I switched to the FrequencyGenerator lib, modified to output on pin 10. Successfully loaded TRMLD into the Sorcerer.

Got a SparkFun microSD board coming soon, so will try to integrate that next.

512 x 240 bitmap graphics:

https://forum.vcfed.org/index.php?threa ... t.1252681/

Thanks, it does work as you described. However, it doesn't work like any other email app or forum PM I've used.

Thanks. I read it and replied.

I tried and my message just sits in my Outbox. How do I send it and then see it in Sent Messages?

Glad to find this new forum! My story: In 1981 I worked at New Dimensions in Computing, the East Lansing store which sold Exidy Sorcerers, Atari 400s and 800s, and Vector Graphic S100 CP/M machines. That's where I got my Sorcerer board. The boss had a customer's Sorcerer with S100 box in for repair ...

I found the cause of the tearing / jitter during screen access. I looked at the HSYNC circuit on an oscilloscope and saw that, during screen RAM accesses (Monitor command TE FE00 FF00), there is a one cycle jitter in timing between HSYNC pulses. That's one cycle of the 6 MHz clock, which is the time...