Parallel ports and data rates

In order to interface to the VFD, I need a datasheet for it. I found that datasheet here: http://datasheet.elcodis.com/pdf/11/45/114557/gu140x32f-7000.pdf.

As I need a high refresh rate to display interesting information, and I want to learn how to implement something in Verilog that isn't an RS232 port, I'm using the VFD's parallel port. I have heard that these VFDs can manage 60-70Hz refresh rates so I'll try pushing the limits with animation. As a rough calculation, the data I'll be sending at 60Hz over each of the 8 parallel ports is

$\color{White} \large \approx \frac{({144*32})(60)}{8} = 33600 bits/s \approx 33kHz$

which is certainly manageable with a 50MHz Spartan6.

Pinouts for the parallel connector:

Pin number	Signal name	Function	Direction
1	GND	Ground	I
2	VCC	Power (6VDC max)	I
3	NC	-	-
4	RS	Switch signal	I
5	/WR	Data write	I
6	/RD	Data read	I
7	D0	Data input	IO
8	D1	Data input	IO
9	D2	Data input	IO
10	D3	Data input	IO
11	D4	Data input	IO
12	D5	Data input	IO
13	D6	Data input	IO
14	D7	Data input	IO

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