-eq? nn-f - - Compare two values for inequality. Returns `TRUE` if they are not equal or `FALSE` otherwise. class:primitive #1 #2 -eq?\n $a $b -eq? {n/a} global all
0; n-n || n- - - If `n` is zero, drop `n` and exit the current word. If non-zero, leave `n` alone and allow execution to continue. class:macro {n/a} {n/a} global all
Compiler -a - - Variable. Holds the compiler state. If TRUE, the compiler is active. If FALSE, it is not. class:data {n/a} {n/a} global all
Dictionary -a - - Variable. Holds a pointer to the most recent dictionary header. class:data {n/a} {n/a} global all
EOM -n - - Constant. Returns the last addressable memory address. class:word {n/a} {n/a} global all
FALSE -n - - Returns `0`, the value used to indicate a FALSE result. class:word {n/a} {n/a} global all
FREE -n - - Returns the number of cells available to your application. This is the amount of memory, less the already consumed portion and buffers mapped for RETRO's internal use. class:word {n/a} {n/a} global all
Heap -a - - Variable. Holds the address of the next available cell. class:data {n/a} {n/a} global all
RewriteUnderscores -a - - Variable. When set to `TRUE`, RETRO will replace underscores in strings with spaces. When `FALSE`, RETRO does not. class:data {n/a} {n/a} global all
STRINGS -a - - Return the address of the start of the temporary string pool. class:word {n/a} {n/a} global all
ScopeList -a - - Variable. This holds some information used by `{{` and `}}`. class:data {n/a} {n/a} global all
TRUE -n - - Returns `-1`, the value used to indicate a TRUE result. class:word {n/a} {n/a} global all
TempStringMax -a - - Variable. Holds the maximum length of a temporary string. class:data {n/a} {n/a} global all
TempStrings -a - - Variable. Holds the number of temporary strings. class:data {n/a} {n/a} global all
Version -a - - Variable. This stores the version number. class:data {n/a} {n/a} global all
[ - - - Begin a quotation. class:macro {n/a} {n/a} global all
] - - - End a quotation. class:macro {n/a} {n/a} global all
again - - - Close an unconditional loop. Branches back to the prior `repeat`. class:macro {n/a} {n/a} global all
call a- - - Call a function. class:primitive {n/a} {n/a} global all
case nmq- || nmq-n - - If `n` is equal to `m`, drop both and execute the specified quote before exiting the calling word. If not equal, leave `n` on the stack and let execution continue. class:word {n/a} {n/a} global all
choose fqq- - - Execute q1 if the flag is `TRUE` or q2 if it is not. class:word {n/a} {n/a} global all
class:data n- || n-n - - Class handler for data structures. Keep the address or value on the stack. Compile the value or address as a literal into the current definition. class:word {n/a} {n/a} class all
class:macro a- - - Class handler for compiler macros (immediate words) Execute the function at the provided address. Execute the function at the provided address. class:word {n/a} {n/a} class all
class:primitive a- - - Class handler for primitive words (words which map to Nga instructions) Execute the function. Compile the machine code in the definiton into the current definition. class:word {n/a} {n/a} class all
class:word a- - - Class handler for normal words. Execute the function at the provided address. Compile a call to the specified address into the current definition. class:word {n/a} {n/a} class all
d:add-header saa- - - Create a header. Provide a string (s) for the name, a pointer to the class handler (a1) and a pointer to the word definition (a2) Generally this won't be used directly. class:word {n/a} {n/a} d all
d:class d-a - - Given a dictionary header, return the class field. class:word {n/a} {n/a} d all
d:create s- - - Create a new dictionary header named the specified string. The new header will point to `here` and have a class of `class:data`. class:word {n/a} {n/a} d all
d:for-each q- - - Execute the specified quote once for each header in the dictionary. Before running the quote, this also pushes a pointer to the header onto the stack. class:word {n/a} {n/a} d all
d:last -d - - Return the most recent dictionary header. class:word {n/a} {n/a} d all
d:last<class> -a - - Return a pointer to the class field of the most recent dictionary header. class:word {n/a} {n/a} d all
d:last<name> -s - - Return a pointer to the name field of the most recent dictionary header. class:word {n/a} {n/a} d all
d:last<xt> -a - - Return a pointer to the xt field of the most recent dictionary header. class:word {n/a} {n/a} d all
d:link d-a - - Given a dictionary header, return the link field. class:word {n/a} {n/a} d all
d:lookup s-d - - Lookup the specified name in the dictionary and return a pointer to its dictionary header. This returns zero if the word is not found. class:word {n/a} {n/a} d all
d:lookup-xt a-d - - Lookup the specified address in the dictionary and return a pointer to its dictionary header. This returns zero if the word is not found. class:word {n/a} {n/a} d all
d:name d-s - - Given a dictionary header, return the name field. class:word {n/a} {n/a} d all
d:xt d-a - - Given a dictionary header, return the xt field. class:word {n/a} {n/a} d all
data - - - Change the class of the most recently defined word to `class:data`. class:word {n/a} {n/a} global all
depth -n - - Return the number of items on the stack. class:word {n/a} {n/a} global all
dip nq-n - - Temporarily remove n from the stack, execute the quotation, and then restore n to the stack. class:word {n/a} {n/a} global all
does q- - - Attach an action to the most recently created word. This is used in a manner similar to CREATE/DOES> in traditional Forth. class:word {n/a} {n/a} global all
drop n- - - Discard the top value on the stack. class:primitive {n/a} {n/a} global all
drop-pair nn- - - Remove top two items on the stack. class:word {n/a} {n/a} global all
dump-stack - - - Display the items on the data stack. class:word {n/a} {n/a} global all
dup n-nn - - Duplicate the top item on the stack. class:primitive {n/a} {n/a} global all
dup-pair nm-nmnm - - Duplicate the top two items on the stack. class:word {n/a} {n/a} global all
eq? nn-f - - Compare two values for equality. Returns `TRUE` if they are equal or `FALSE` otherwise. class:primitive #1 #2 eq?\n $a $b eq? {n/a} global all
f:-eq? -f - FF- Compare two floating point values for inequality. Returns `TRUE` if they are not equal or `FALSE` otherwise. class:word {n/a} {n/a} f rre
f:/ - - FF-F Divide floating point value F1 by F2. class:word {n/a} {n/a} f rre
file:open sm-h - - Open a named file (s) with the given mode (m). Returns a handle identifying the file. class:word '/etc/motd file:R file:open {n/a} file rre
file:spew ss- - - Given a string (s1) and a file name (s2), write the string into the file, replacing any existing cotent. class:word {n/a} {n/a} file rre
gopher:get asns-n - - Takes an address, a server, a port, and a selector. Fetch the resource and store it at address. Return the number of bytes received. class:word here 'forthworks.com #70 '/ gopher:get\n here puts {n/a} gopher rre
n:abs n-n - - Return the absolute value of a number. class:word #10 n:abs\n #-10 n:abs\n {n/a} n all
n:between? nlu-f - - Return TRUE if number is between the lower (l) and upper (u) bounds. If not, return FALSE. This is inclusive of the limits. class:word #3 #1 #100 n:between?\n $q $a $b n:between? {n/a} n all
n:dec n-m - - Decrement n by one. class:word #100 n:dec {n/a} n all
n:even? n-f - - Return `TRUE` if number is even, or `FALSE` if not. class:word #12 n:even?\n #11 n:even? {n/a} n all
n:inc n-m - - Increment n by one. class:word #100 n:inc {n/a} n all
n:limit nlu-m - - Return n if it is within the lower (l) and upper (u) bounds. If outside the bounds, return the closes boundary value. class:word #-10 #5 #8 n:limit\n #10 #1 #15 n:limit {n/a} n all
n:max mn-o - - Return the greater of two values. class:word #1 #7 n:max\n #-8 #-10 n:max {n/a} n all
n:min mn-o - - Return the lesser of two values. class:word #1 #7 n:min\n #-8 #-10 n:min {n/a} n all
n:negate n-n - - Invert the sign of a number. class:word #10 n:negate\n #-10 n:negate {n/a} n all
parse-until q-s - - Read input from stdin (via `getc`) until the returned character is matched by the quote. Returns a string. class:word :read-until-period (-s)\n [ $. eq? ] parse-until ; {n/a} all rre
prefix:! ns- - - Store a value into a variable. Store a value into the named variable. Compile the code to store a value into a named variable. class:macro {n/a} {n/a} prefix all
prefix:# s-n - - Process token as a number. Convert the string into a number and leave on the stack. Convert the string into a number and compile into the current definition as a literal. class:macro {n/a} {n/a} prefix all
prefix:$ s-c - - Process token as an ASCII character. Fetch first character from string. Leave on stack. Fetch first character from the string. Compile into the current definition as literal. class:macro {n/a} {n/a} prefix all
prefix:& s-a - - Return a pointer to a named item. Lookup name in dictionary, return contents of the xt field on the stack. Lookup name in dictionary, compile code to push the contents of the xt field into the current definition. class:macro {n/a} {n/a} prefix all
prefix:' s-s - - Process token as a string. Move string into temporary buffer. If `RewriteUnderscores` is `TRUE`, replace all instances of _ with space. Move string into temporary buffer. If `RewriteUnderscores` is `TRUE`, replace all instances of _ with space. Then compile the string into the current definition. class:macro {n/a} {n/a} prefix all
prefix:( s- - - Process token as a comment. Discard the string. Discard the string. class:macro {n/a} {n/a} prefix all
prefix:. s- - -F Interpret time: convert string to a floating point value. Compile time: convert string to a floating point value and compile code to push this value to the float stack. class:macro {n/a} {n/a} prefix rre
prefix:: s- - - Process token as a new definition. Create a header pointing to `here` with the provided string as the name. Sets class to `class:word`. class:macro {n/a} {n/a} prefix all
prefix:@ s-n - - Fetch from a stored variable. Fetch a value from a named variable. Compile the code to fetch a value from a named variable into the current definition. class:macro {n/a} {n/a} prefix all
prefix:` s- - - Process token as a bytecode. Discard the string. Convert the string to a number and use `,` to inline it into the current definition. class:macro {n/a} {n/a} prefix all
push n- -n - Move a value from the data stack to the return stack. class:macro {n/a} {n/a} global all
putc c- - - Display a single character. class:word {n/a} {n/a} global all
putf - - F- Display a floating point number. class:word {n/a} {n/a} global rre
putn n- - - Display a number. class:word {n/a} {n/a} global all
puts s- - - Display a string. class:word {n/a} {n/a} global all
r s- - - Lookup a reference by name and inline its pointer to the current assembly segment. class:word {n/a} {n/a} global all
reclass a- - - Change the class handler of the most recently defined word to the specified one. class:word {n/a} {n/a} global all
reorder ...ss-? - - Restructure the order of items on the stack. class:word {n/a} {n/a} global all
repeat - - - Begin an unconditional loop. class:macro {n/a} {n/a} global all
reset ...- - - Remove all items from the stack. class:word {n/a} {n/a} global all
rot abc-bca - - Rotate the top three values. class:word {n/a} {n/a} global all
s, s- - - Compile the code needed to push a string pointer to the stack and inline the string data into the current definition. class:word {n/a} {n/a} global all
s:case sSq- || sSq-s - - If the `s` matches `S`, discard `s` and run the quote before exiting the caller. If they do not match, discard the quote and leave `s` on the stack. class:word {n/a} {n/a} s all
s:chop s-s - - Remove the last character from a string. class:word {n/a} {n/a} s all
s:const ss- - - Create a constant named s2, returning a pointer to s1. This will use `s:keep` to preserve the original string. class:word {n/a} {n/a} s all
s:contains-char? sc-f - - Return `TRUE` if the character is present in the string or `FALSE` otherwise. class:word {n/a} {n/a} s all
s:contains-string? ss-f - - Return `TRUE` if the second string is present in the first string or `FALSE` otherwise. class:word {n/a} {n/a} s all
s:copy sa- - - Copy a string (s) to a destination (a). This will include the terminator character when copying. class:word {n/a} {n/a} s all
s:empty -s - - Return an empty string. class:word {n/a} {n/a} s all
s:eq? ss-f - - Compare two strings for equality. Return `TRUE` if identical or `FALSE` if not. class:word 'hello 'again s:eq?\n 'test 'test s:eq? {n/a} s all
s:filter sq-s - - Execute the quote once for each value in the string. If the quote returns `TRUE`, append the value into a new string. If `FALSE` the value will be discarded. class:word {n/a} {n/a} s all
s:index-of-string ss-n - - Return the location of the first instance of the specified substring (s2) in the string (s1). Returns -1 if not found. class:word {n/a} {n/a} s all
s:keep s-s - - Store a string into the heap and return a pointer to the start of it. class:word {n/a} {n/a} s all
s:left sn-s - - Return a new string containing the first `n` characters from the source string. class:word {n/a} {n/a} s all
s:length s-n - - Return the number of characters in a string, excluding the NULL terminator. class:word {n/a} {n/a} s all
s:map sq-s - - Execute the specified quote once for each character in the string. Builds a new string from the return value of the quote. The quote should return only one value. class:word {n/a} {n/a} s all
s:prepend ss-s - - Return a new string consisting of s2 followed by s1. class:word {n/a} {n/a} s all
s:split-on-string ss-ss - - Split a string on the first occurrance of the specified string. After the split, the top stack item will be the part of the string before the specified subsring, and the second item will be the rest of the original string. class:word 'Hello_Brave_World! 'Brave s:split-on-string puts nl puts nl {n/a} s all
s:substr sfl-s - - Extract a substring from the specified string. This will take the characters starting at `f` and extend `l` characters in length. class:word {n/a} {n/a} s all
s:temp s-s - - Move a string into the temporary string buffers. class:word {n/a} {n/a} s all
s:to-float s- - -F Convert a string representation into a floating point value. class:word {n/a} {n/a} s rre
s:to-lower s-s - - Convert uppercase ASCII characters in a string to lowercase. class:word {n/a} {n/a} s all
s:to-number s-n - - Convert a string to a number. class:word {n/a} {n/a} s all
s:to-upper s-s - - Convert lowercase ASCII characters in a string to uppercase. class:word {n/a} {n/a} s all
s:tokenize sc-a - - Takes a string and a character to use as a separator. It splits the string into a set of substrings and returns a set containing pointers to each of them. class:word {n/a} {n/a} {n/a} {n/a}
s:tokenize-on-string ss-a - - Takes a string (s1) and a substring (s2) use as a separator. It splits the string into a set of substrings and returns a set containing pointers to each of them. class:word {n/a} {n/a} {n/a} {n/a}
s:with-format ...s-s - - Construct a new string using the template passed and items from the stack. class:word {n/a} {n/a} s all
set:contains-string? sa-f - - Return `TRUE` if the string value is in the set or`FALSE` otherwise. class:word {n/a} {n/a} set all
set:contains? na-f - - Return `TRUE` if the value is in the set or `FALSE` otherwise. class:word {n/a} {n/a} set all
set:dup a-b - - Make a copy of a set. Return the address of the copy. class:word {n/a} {n/a} set all
set:filter aq-b - - For each item in the initial set, run the specified quote. If the quote returns `TRUE`, copy the item into a new set. If `FALSE`, discard it. Returns a pointer to the new set. class:word {n/a} {n/a} set all
set:for-each aq- - - Execute the quote once for each item in the set. class:word {n/a} {n/a} set all
set:from-results q-a - - Execute quote. Return a new set containing the values the quote leaves on the stack. class:word {n/a} {n/a} set all
set:from-string s-a - - Create a new set with the characters in the source string. class:word {n/a} {n/a} set all
set:length a-n - - Return the length of a set. class:word {n/a} {n/a} set all
set:map aq- - - Execute quote once for each item in the set. Constructs a new set from the value returned by the quote. class:word {n/a} {n/a} set all
set:nth an-b - - Return the actual address of the nth item in the set. class:word {n/a} {n/a} set all
set:reduce pnq-n - - Takes a set, a starting value, and a quote. This will apply the quote to each item in the set; the quote should consume two values and return one. class:word {n/a} {n/a} set all
set:reverse a-b - - Reverse the order of items in a set. This will return a new set. class:word {n/a} {n/a} set all
shift mn-o - - Peform a bitwise shift of m by n bits. If n is positive, shift right. If negative, the shift will be to the left. class:primitive {n/a} {n/a} global all
sip nq-n - - Run quote. After execution completes, put a copy of n back on top of the stack. class:word {n/a} {n/a} global all
unix:getenv sa- - - Get an environment variable. Provide the name and an address to store it in. class:word 'SHELL s:empty [ unix:getenv ] sip puts nl {n/a} unix rre
unix:getpid -n - - Return the PID of the current process. class:word {n/a} {n/a} unix rre
unix:kill nn- - - Terminates a process. Takes a process and a signal to send. class:word {n/a} {n/a} unix rre
unix:pclose n- - - Close a pipe. class:word {n/a} {n/a} unix rre
unix:popen sn-n - - Open a pipe. Takes a command to run, and a file mode (`file:R` or `file:W`; `file:R+` may work on some systems). Returns a file ID usable with words in the `file:` namespace. class:word {n/a} {n/a} unix rre
unix:putenv s- - - Takes a string in the form `name=value` and sets an environment variable named `name` to `value`. class:word 'EDITOR=vi unix:putenv {n/a} unix rre
unix:system s- - - Runs another application using the system shell and returns after execution is completed. class:word 'ls_-lh_/etc unix:system {n/a} unix rre
until q- - - Execute quote repeatedly while the quote returns a value of `FALSE`. The quote must return a flag of either `TRUE` or `FALSE` to be used with this. class:word #10 [ dup putn nl n:dec dup n:zero? ] until {n/a} global all
v:dec a- - - Decrement the value stored at the specified address by 1. class:word {n/a} {n/a} v all
v:dec-by na- - - Decrement the value stored at the specified address by the specified value. class:word {n/a} {n/a} v all
v:inc a- - - Increment the value stored at the specified address by 1. class:word {n/a} {n/a} v all
v:inc-by na- - - Increment the value stored at the specified address by the specified value. class:word {n/a} {n/a} v all
v:limit alu- - - Fetch the value stored at the address, then run `n:limit` against it, using the specified lower and upper bounds. Then store the resulting value back to the original address. class:word {n/a} {n/a} v all
v:off a- - - Set a variable to 0. class:word {n/a} {n/a} v all
v:on a- - - Set a variable to -1. class:word {n/a} {n/a} v all
v:preserve aq- - - Make a copy of the value at the address, then run the quote. Once the quote completes, restore the address to the specified value. class:word {n/a} {n/a} v all
v:update-using aq- - - Fetch a value from the specified address, then run the quotation with this value on the stack. Afterwards, store the returned value at the original address. class:word {n/a} {n/a} v all
var s- - - Create a variable. The variable is initialized to 0. class:word 'Base var {n/a} global all
var<n> ns- - - Create a variable with the specified initial value. class:word #10 'Base var<n>\n {n/a} global all
while q- - - Execute quote repeatedly while the quote returns a value of `TRUE`. The quote must return a flag of either `TRUE` or `FALSE` to be used with this. class:word #10 [ dup putn nl n:dec dup n:-zero? ] while {n/a} global all
