The Wyse-50 is an ASCII terminal only. Why would a graphics card rely on that ?
I have a PAL reader, but beware : the PAL's are read-protected as I found out. You can still brute-force read them, which is what I have done for the one in the HD-PCB.
DC0086C_Stride_owners_manual_V1 and DC0087_Stride_owners_manual_V2, DC0165E_Unistride_release_notes and DC218A_400_series_Stride_release_notes have already been scanned.
taken from press release document:
.RENO, Nevada -- February 8, 1985 -- Stride Micro today
announced the availability of memory-mapped video graphics
for the entire Stride 400 Series. Designed to take full
advantage of the 10MHz 68000 microprocessor, the new graphics
board option is capable of generating high-speed, high-
resolution images on a standard monochrome Stride (or Wyse
WY-50) terminal. This will allow both developers and users
to explore new techniques in windowing, animation, CAD, and a
variety of other innovative graphic software.
The Stride graphics board, with the low, suggested retail
price of $400, utilizes asynchronous memory access. This
allows for extremely fast video output, yet does not slow
down the system during non-graphics processing. Because of
the unique Stride design, the video refresh does not affect
the general operation of the 68000 processor. This permits
it to run at full speed, except when actually writing to the
video RAM.
A System RAM to Video RAM transfer can be accomplished
at 35 fps (frames per second) and a Register to Video RAM
transfer (eg: screen fill/clear operations) achieves 58 fps.
This phenomenal speed allows a screen memory update to be
performed faster than a screen refresh cycle, thus avoiding
any image flicker. Further demonstrating Stride's philosophy
of "Performance by Design~," the processor is able to operate
at the full 10 MHz (optionally 12 MHz) speed without wait
states when not addressing graphics RAM.
.A powerful feature of this video option is the ability
to display both terminal-generated characters and bit-mapped
graphics concurrently. This simplifies graphics development
by using the same screen for both programming and graphics
testing. Additionally, the developer is able to create new
character fonts, if desired, or utilize the existing ones
of the terminal.
.The graphics board option is implemented with minimal
hardware to acheive the now standard high price/performance
ratio Stride is known for. It utilizes a VMEbus compatible
card which mounts on standoffs in any
Stride 400 Series
machine. It contains 32K bytes of RAM which may be addressed
in the same manner as any other system RAM. The visible
resolution is 784 X 325 using one bit per pixel (on or off.)
Included in the option are a new sheet metal backpanel and
the necessary cables (for 420 and 440 systems, a backplane
containing an extra VME socket is provided.)
Graphics
.The Stride graphics board is currently offered as a
development tool only and is being marketed as a "Gamma" test
product. It comes complete with the board, connecting hard-
ware, basic graphic primitives, sources, simple demonstration
software and limited documentation. The "Gamma" version is
available immediately in single-unit quantity only and will
become a standard stock item as of April 12, 1985. The
public debut of this product is scheduled for May 6, 1985.
Suggested retail price of the Stride video board is $400
.Stride Micro, formerly Sage Computer, was founded in
1981 to manufacture and market high-performance 68000-based
microcomputer systems at competitive prices. Stride head-
quarters are located in Reno, Nevada, with regional offices
in Boston, Dallas and London, England, and distributors in
over 35 countries worldwide.
.Stride Micro's new graphics board has been designed to
provide memory mapped video graphics which take full
advantage of the 10 MHz 68000 microprocessor to generate
high-speed images on a standard monochrome Stride terminal.
.The Stride graphics board uses asynchronous memory
access, allowing for extermely fast video output and does not
slow down the system during non-graphics processing.
.The video card connects to the DB25 "Modem" port of any
standard Stride terminal with a special 16-inch cable. A
second jumper cable connects the video board to one of the
computer's serial ports. The terminal itself requires the
installation of four shunts on its main IC board. Resolution
on the terminal is 784 X 325 with one bit per pixel.
.The graphics board is currently a development tool only
and is being marketed as a "Gamma" test product. It will be
a standard stock item effective April 12, 1985, with the
public introduction scheduled for May 6, 1985.
