Pulled the blog posts into the other branches

_posts/2016-08-03-the-vt100-terminal.md

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+---
+layout: post
+title: The VT100 Terminal
+date: 2016-08-03 18:00:00
+permalink: /blog/2016/08/03/
+machines:
+  - type: pc8080
+    id: vt100
+    config: /devices/pc8080/machine/vt100/machine.xml
+---
+
+Summer has been filled with distractions, but I've finally begun making headway on a
+[DEC VT100 Terminal](/devices/pc8080/machine/vt100/) simulation.
+
+Unlike other VT100 emulators, this isn't simply an emulation of VT100 protocols.  It's a simulation of the VT100's
+8080 CPU, running the original [VT100 Firmware](/devices/pc8080/rom/vt100/) inside the [PC8080](/modules/pc8080/)
+CPU emulator, along with other essential components that the CPU interacts with to control the display, keyboard, and
+serial port.
+
+Most of the VT100's (non-AVO) functionality should be operational now.  Once the VT100 "powers on," it should clear
+the screen and briefly display a "WAIT" message as it processes its Non-Volatile RAM (NVR).  When you see a blinking cursor,
+it's ready to use.  Press the SET-UP key to configure the terminal, just as you would an original VT100 terminal.
+
+For even more fun, check out the [Dual VT100 Terminals](/devices/pc8080/machine/vt100/dual/) demo.
+
+{% include machine.html id="vt100" %}
+
+Function keys are mapped as follows:
+
+- F1: PF1
+- F2: PF2
+- F3: PF3
+- F4: PF4
+- F6: BREAK
+- F7: LINE FEED
+- F8: NO SCROLL
+- F9: SET-UP
+
+From the SET-UP screen, you can press **4** to switch to LOCAL mode and verify local operation of most VT100
+keys.  The following keys have special meaning inside SET-UP Mode:
+
+- 0: RESET
+- 2: SET/CLEAR TAB
+- 3: CLEAR ALL TABS
+- 4: ONLINE/LOCAL
+- 5: SET-UP A/B
+- 6: TOGGLE FEATURE
+- 7: TRANSMIT SPEED
+- 8: RECEIVE SPEED
+- 9: 80/132 COLUMNS
+- SHIFT-S: Save SET-UP Features
+- SHIFT-R: Restore SET-UP Features
+
+The initial goal for the simulation is to provide a virtual terminal that can communicate with other PCjs machines
+and provide a realistic serial communication experience, all from the comfort of your web browser.
+
+Eventually, I would also like to recreate a fully commented source-code listing for the [DEC VT100 ROMs](/devices/pc8080/rom/vt100/).
+DEC's [VT100 Technical Manuals](/pubs/dec/vt100/) are excellent, and they provide an enormous amount of hardware detail,
+but they are a bit light on certain programming details, and there are no firmware listings like those those that IBM provided
+in the early IBM PC Technical Reference manuals.
+
+Check out the [VT100 Debugger Configuration](/devices/pc8080/machine/vt100/debugger/) for additional information about
+VT100 internals and links to other technical resources.
+
+*[@jeffpar](http://twitter.com/jeffpar)*  
+*Aug 3, 2016*