Lua 5.4.7 on HP Prime

Lua 5.4.7 on HP Prime

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Lua 5.4.7 on HP Prime - SQY - 2026-10-01 17:19

Lua programs can now be run on the HP Prime. With DeepSeek's help, the original Lua 5.4.7 was ported to the calculator. Note: only G1 with firmware 20250915 can use it.

How to use: Transfer primeLua.hpappdir to the calculator to launch it. Tap to execute a Lua program.

It is recommended to use PrimeCode 1.1 or later to edit Lua code on the calculator; it provides Lua highlighting support.

In actual tests, primeLua's memory leak is extremely small, ranging from 1–10K. By comparison, primeLua drops ~2 MB of memory every time it compiles + executes.

Let's start
What is Lua? 撸啊
Write your first primeLua program:
Print a line of text: hello, primeLua!

Code:
print("hello, primeLua!")

Below is a small program I wrote to calculate pi using the Monte Carlo method; it draws the simulation process on the screen.

Code:
gfx.init()
gfx.clear(gfx.BLACK)
count = 0
color = 0
for i=1, 100000000 do
 x, y = math.random(), math.random()
 if xx + yy <= 1 then
  count = count + 1
  color = gfx.BLUE
 else
  color = gfx.WHITE
 end
 gfx.pixel(x240, y240, color)
 if i % 20000 == 0 then
  gfx.textbg(240, 0, tostring(4 * count / i), gfx.WHITE, gfx.BLACK)
 end
end
print(count * 4)
sys.sleep(5000)

I ran a performance test, using a single calculation on a Casio calculator as the baseline. The values here are the number of summations computed by the Chinese Edition Casio fx 991 CNX. It can compute 562.5 summations per second.

Code:
  time        micropython      primeLua    ZSE-TILua-CX

zeta(2) 1e6     13371            3270        11407
fib(32)         10364            3295          ?

below is the document.